스크린샷
설명: Select an activity to run it.
필요 조건: Some of the activities are game orientated, but still educational.
목표: GCompris is a high quality educational software suite, including a large number of activities for children aged 2 to 10.
설명서: Select an icon to enter an activity or to display a list of activities in a category.
At the bottom of the screen is the GCompris control bar. Notice that you can hide or show the bar by touching its anchor.
The following icons are displayed:
(note that each icon is displayed only if available in the current activity)
Keyboard shortcuts:
At the bottom of the screen is the GCompris control bar. Notice that you can hide or show the bar by touching its anchor.
The following icons are displayed:
(note that each icon is displayed only if available in the current activity)
- Home - Exit an activity, go back to menu (Ctrl+W or Escape key)
- Arrows - Display the current level. Click to select another level
- Lips - Repeat the question
- Question Mark - Help
- Reload - Start the activity from the beginning again
- Tool - The configuration menu
- Three lines - The activity settings menu
- G - About GCompris
- Quit - Quit GCompris (Ctrl+Q)
- 1, 2 or 3 yellow stars - from 2 to 6 years old
- 1, 2 or 3 red stars - 7 years and up
Keyboard shortcuts:
- Ctrl+B: Show or Hide the control bar
- Ctrl+F: Toggle full screen
- Ctrl+S: Toggle the activity section bar
A baby word processor
computer keyboard reading letters baby_wordprocessor
Bruno Coudoin & Timothée Giet
설명: A simplistic word processor to let the children play around with a keyboard and see letters.
목표: Discover the keyboard and the letters.
설명서: Just type on the real or virtual keyboard like in a word processor.
Clicking on the 'Title' button will make the text bigger. Similarly, the 'subtitle' button will make the text slightly less bigger. Clicking on 'paragraph' will remove the formatting.
Keyboard controls:
Clicking on the 'Title' button will make the text bigger. Similarly, the 'subtitle' button will make the text slightly less bigger. Clicking on 'paragraph' will remove the formatting.
Keyboard controls:
- Arrows: navigate inside the text
- Shift + Arrows: select a part of the text
- Ctrl + A: select all the text
- Ctrl + C: copy selected text
- Ctrl + X: cut selected text
- Ctrl + V: paste copied or cut text
- Ctrl + D: delete selected text
- Ctrl + Z: undo
- Ctrl + Shift + Z: redo
설명: Create your own drawing.
목표: Enhance creative skills.
설명서: Select a color and paint the rectangles as you like to create a drawing.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: paint
- Tab: switch between the color selector and the painting area
설명: Remove the red car from the parking lot through the gate on the right.
설명서: Each car can only move either horizontally or vertically. You must make some room in order to let the red car move through the gate on the right.
개발자:
- "Car Start Engine" by henrique85n, (https://freesound.org/people/henrique85n/sounds/160442/), CC BY 3.0, extract
Addition and subtraction memory game
math memory arithmetic memory-math-add-minus
JB BUTET & Timothée Giet
설명: Flip the cards to match an addition or a subtraction with its result.
필요 조건: Additions and subtractions.
목표: Practice additions and subtractions.
설명서: Each card is hiding either an operation (an addition or a subtraction), or a result. You have to match the operations with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
Addition and subtraction memory game against Tux
math memory arithmetic memory-math-add-minus-tux
JB BUTET & Timothée Giet
설명: Flip the cards to match an addition or a subtraction with its result, playing against Tux.
필요 조건: Additions and subtractions.
목표: Practice additions and subtractions.
설명서: Each card is hiding either an operation (an addition or a subtraction), or a result. You have to match the operations with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Flip the cards to match an addition with its result.
필요 조건: Additions.
목표: Practice additions.
설명서: Each card is hiding either an addition, or a result. You have to match the additions with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
Addition memory game against Tux
math memory arithmetic memory-math-add-tux
JB BUTET & Timothée Giet
설명: Flip the cards to match an addition with its result, playing against Tux.
필요 조건: Additions.
목표: Practice additions.
설명서: Each card is hiding either an addition, or a result. You have to match the additions with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Practice the addition of numbers.
필요 조건: Simple addition. Can recognize written numbers.
목표: Learn to find the sum of two numbers within a limited period of time.
설명서: An addition is displayed on the screen. Quickly find the result and use your computer's keyboard or the on-screen keypad to type it. You have to be fast and submit the answer before the penguins land in their balloon!
Keyboard controls:
Keyboard controls:
- Digits: type your answer
- Backspace: delete the last digit in your answer
- Enter: validate your answer
Additions with decimal numbers
math arithmetic learn_decimals_additions
Mariam Fahmy & Timothée Giet
설명: Learn additions with decimal numbers.
목표: Learn additions with decimal numbers by counting how many squares are needed to represent the result.
설명서: An addition with two decimal numbers is displayed. Drag the arrow to select a part of the bar, and drag the selected part of the bar to the empty area. Repeat these steps until the number of dropped bars corresponds to the result of the addition, and click on the OK button to validate your answer.
If the answer is correct, type the corresponding result, and click on the OK button to validate your answer.
Keyboard controls:
If the answer is correct, type the corresponding result, and click on the OK button to validate your answer.
Keyboard controls:
- Enter: validate your answer
- Numbers: type the result
설명: Select the butterfly of the correct color.
필요 조건: Can read.
목표: Learn to recognize unusual colors.
설명서: You will see dancing butterflies of different colors and a question. You have to find the correct butterfly and touch it.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: select an item
설명: Arrange four tokens in a row.
목표: Create a line of 4 tokens either horizontally (lying down), vertically (standing up) or diagonally.
설명서: Play with the computer. Take turns to click the line in which you want to drop a token. The first player to create a line of 4 tokens wins.
Keyboard controls:
Keyboard controls:
- Left arrow: move the token to the left
- Right arrow: move the token to the right
- Space or Down arrow: drop the token
설명: Arrange four tokens in a row.
목표: Create a line of 4 tokens either horizontally (lying down), vertically (standing up) or diagonally.
설명서: Play with a friend. Take turns to click the line in which you want to drop a token. The first player to create a line of 4 tokens wins.
Keyboard controls:
Keyboard controls:
- Left arrow: move the token to the left
- Right arrow: move the token to the right
- Space or Down arrow: drop the token
All operations memory game
math memory arithmetic memory-math-add-minus-mult-div
JB BUTET & Timothée Giet
설명: Flip the cards to match an operation with its result.
필요 조건: Additions, subtractions, multiplications, divisions.
목표: Practice additions, subtractions, multiplications, divisions.
설명서: Each card is hiding either an operation, or a result. You have to match the operations with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
All operations memory game against Tux
math memory arithmetic memory-math-add-minus-mult-div-tux
JB BUTET & Timothée Giet
설명: Flip the cards to match an operation with its result, playing against Tux.
필요 조건: Additions, subtractions, multiplications, divisions.
목표: Practice additions, subtractions, multiplications, divisions.
설명서: Each card is hiding either an operation, or a result. You have to match the operations with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Move the helicopter to catch the clouds following the order of the alphabet.
필요 조건: Can decode letters.
목표: Alphabet sequence.
설명서: Catch the alphabet letters. With a keyboard use the arrow keys to move the helicopter. With a pointing device you just click or tap on the target location. To know which letter you have to catch you can either remember it or check the bottom right corner.
Keyboard controls:
Keyboard controls:
- Arrows: move the helicopter
설명: Create and simulate an analog electric schema.
필요 조건: Requires some basic understanding of the concept of electricity.
목표: Create an analog electric schema with a real time simulation.
설명서: Drag electrical components from the selector and drop them in the working area. In the working area, you can move the components by dragging them. To delete a component or wire, select the deletion tool on top of the component selector, and select the component or wire. You can click on the component and then on the rotate buttons to rotate it or on the info button to get information about it. You can click on the switch to open and close it. Likewise, you can change the rheostat value by dragging its slider. To connect two terminals, click on the first terminal, then on the second terminal. To deselect a terminal, click on any empty area. For repairing a broken bulb or LED, click on it after disconnecting it from the circuit. The simulation is updated in real time by any user action.
개발자: The electric simulation engine is from edX: <https://github.com/edx/edx-platform/blob/master/common/lib/xmodule/xmodule/js/src/capa/schematic.js>.
설명: Flip the cards to match the sound pairs.
목표: Train your audio memory.
설명서: Each card plays a sound when you flip it, and each card has a twin with exactly the same sound. Click on a card to hear its hidden sound, and try to match the twins. You can only flip two cards at once, so you need to remember where a sound is, while you search for its twin. When you flip the twins, they both disappear.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Flip the cards to match the sound pairs, playing against Tux.
목표: Train your audio memory.
설명서: Each card plays a sound when you flip it, and each card has a twin with exactly the same sound. Click on a card to hear its hidden sound, and try to match the twins. You can only flip two cards at once, so you need to remember where a sound is, while you search for its twin. When you flip the twins, they both disappear.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: A simple activity to discover the keyboard.
목표: Discover the keyboard.
설명서: Type any key on the keyboard.
Letters, numbers and other character keys will display the corresponding character on the screen.
If there is a corresponding voice it will be played, else it will play a bleep sound.
Other keys will just play a click sound.
Letters, numbers and other character keys will display the corresponding character on the screen.
If there is a corresponding voice it will be played, else it will play a bleep sound.
Other keys will just play a click sound.
설명: Move the mouse or touch the screen and observe the result.
필요 조건: Mouse-manipulation.
목표: Provide audio-visual feedback when using the mouse to help discovering its usage for young children.
설명서: The screen has 3 sections:
- The leftmost column contains 4 ducks, clicking on one of them produces a sound and an animation.
- The central area contains a blue duck, moving the mouse cursor or doing a drag gesture on a touchscreen makes the blue duck move.
- The arrows area, clicking on one of them makes the blue duck move in the corresponding direction.
설명: Navigate the ball to the door by tilting the box.
목표: Practice fine motor skills and basic counting.
설명서: Navigate the ball to the door. Be careful not to make it fall into the holes. Numbered-contact buttons in the box need to be touched in the correct order to unlock the door. You can move the ball by tilting your mobile device. On desktop platforms use the arrow keys to simulate tilting.
In the activity settings menu you can choose between the default 'Built-in' level set and one that you can define yourself ('User'). To create a level set, select the 'user' level set and start the level editor by clicking on the corresponding button.
In the level editor you can create your own levels. Choose one of the editing tools on the side to modify the map cells of the currently active level in the editor:
You can test a modified level by clicking on the 'Test' button on the side of the editor view. You can return from testing mode by clicking on the home-button on the bar or by pressing escape on your keyboard or the back-button on your mobile device.
In the editor you can change the level currently edited by using the arrow buttons on the bar. Back in the editor you can continue editing the current level and test it again if needed.When your level is finished you can save it to a file by clicking on the 'Save' button on the side.
To return to the activity settings click on the home-button on the bar or press Escape on your keyboard or the back button on your mobile device.
Finally, to load your level set, click on the 'Load saved levels' button.
In the activity settings menu you can choose between the default 'Built-in' level set and one that you can define yourself ('User'). To create a level set, select the 'user' level set and start the level editor by clicking on the corresponding button.
In the level editor you can create your own levels. Choose one of the editing tools on the side to modify the map cells of the currently active level in the editor:
- Cross: clear a map cell completely
- Horizontal Wall: add/remove a horizontal wall on the lower edge of a cell
- Vertical Wall: add/remove a vertical wall on the right edge of a cell
- Hole: add/remove a hole on a cell
- Ball: set the starting position of the ball
- Door: Set the door position
- Contact: add/remove a contact button. With the spin-box you can adjust the value of the contact button. It is not possible to set a value more than once on a map.
You can test a modified level by clicking on the 'Test' button on the side of the editor view. You can return from testing mode by clicking on the home-button on the bar or by pressing escape on your keyboard or the back-button on your mobile device.
In the editor you can change the level currently edited by using the arrow buttons on the bar. Back in the editor you can continue editing the current level and test it again if needed.When your level is finished you can save it to a file by clicking on the 'Save' button on the side.
To return to the activity settings click on the home-button on the bar or press Escape on your keyboard or the back button on your mobile device.
Finally, to load your level set, click on the 'Load saved levels' button.
설명: Drag and Drop some weights to balance the scales.
목표: Mental calculation, arithmetic equality.
설명서: To balance the scales, move some weights to the left or the right side (on higher levels). The weights can be arranged in any order.
Balance using the International System of Units
math measures scalesboard_weight
Bruno Coudoin & Timothée Giet
설명: Drag and Drop some masses to balance the scales and calculate the weight.
목표: Mental calculation, arithmetic equality, unit conversion.
설명서: To balance the scales, move some masses to the left or the right side (on higher levels). They can be arranged in any order. Take care of the weight and the unit of the masses, remember that a kilogram (kg) is 1000 grams (g).
Balance using the imperial system of units
math measures scalesboard_weight_avoirdupois
Bruno Coudoin & Timothée Giet
설명: Drag and Drop some masses to balance the scales and calculate the weight.
목표: Mental calculation, arithmetic equality, unit conversion.
설명서: To balance the scales, move some masses to the left or the right side (on higher levels). They can be arranged in any order. Take care of the weight and the unit of the masses, remember that a pound (lb) is 16 ounce (oz).
설명: Select the number of balls you wish to place in the holes and then click on the OK button. The winner is the one who hasn't put a ball in the red hole.
필요 조건: Ability to count.
목표: Don't put the ball in the last hole.
설명서: Click on the ball icon to select a number of balls, then click on the OK button to place the balls in the holes. You win if the computer has to place the last ball. If you want Tux to begin, just click on him.
설명: Select the number of balls you wish to place in the holes and then click on the OK button. The winner is the one who hasn't put a ball in the red hole.
필요 조건: Ability to count.
목표: Don't put the ball in the last hole.
설명서: Click on the ball icon to select a number of balls, then click on the OK button to place the balls in the holes. You win if your friend has to place the last ball.
설명: This activity helps you to learn the concept of conversion from decimal number system to binary number system.
필요 조건: Decimal number system.
목표: To get familiar with the binary number system.
설명서: Turn on the right bulbs to represent the binary of the given decimal number. When you have achieved it, press OK.
설명: Practice braille letters.
필요 조건: Braille alphabet.
설명서: Create the braille cells for the letters on the banner. Check the braille chart by clicking on the blue braille cell icon if you need some help.
Keyboard controls:
Keyboard controls:
- Space: open or close the braille chart
설명: Drive the crane and copy the model.
필요 조건: Mouse/keyboard manipulation.
목표: Practice motor-coordination.
설명서: Move the items in the blue frame to match their position in the model frame. To select an item, just click on it. Next to the crane, you will find four arrows that let you move the selected item. You can also swipe up/down/left/right to move the selected item.
Keyboard controls:
Keyboard controls:
- Arrows: move the selected item
- Space or Enter or Tab: select the next item
설명: Read the instructions and select the correct date on the calendar.
필요 조건: Concept of week, month and year.
목표: Learn how to use a calendar.
설명서: Read the instructions and select the correct date on the calendar, and then validate your answer by clicking on the OK button.
In some levels, you need to find the day of the week for a given date. In this case, click on the corresponding day of the week in the list.
Keyboard controls:
In some levels, you need to find the day of the week for a given date. In this case, click on the corresponding day of the week in the list.
Keyboard controls:
- Arrows: navigate through the answers
- Space or Enter: validate your answer
Case association memory game
reading letters memory-case-association
Aman Kumar Gupta & Timothée Giet
설명: Flip the cards to find the uppercase and lowercase of the same letter.
필요 조건: Knowing alphabets.
목표: Learning lowercase and uppercase letters, memory.
설명서: Each card is hiding a letter, lowercase or uppercase. You have to match the lowercase and uppercase of the same letter.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
Case association memory game against Tux
reading letters memory-case-association-tux
Aman Kumar Gupta & Timothée Giet
설명: Flip the cards to find the uppercase and lowercase of the same letter, playing against Tux.
필요 조건: Knowing alphabets.
목표: Learning lowercase and uppercase letters, memory.
설명서: Each card is hiding a letter, lowercase or uppercase. You have to match the lowercase and uppercase of the same letter.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Categorize the items into correct and incorrect groups.
필요 조건: Can drag items using a mouse or touchscreen.
목표: Build conceptual thinking and enrich knowledge.
설명서: Review the instructions and then drag and drop the items as specified.
설명: Drag and Drop the items to organize the story.
필요 조건: Tell a short story.
목표: Sort the pictures into the order that tells the story.
설명서: Pick the pictures on the side and put them on the dots in the right order. Then, click on the OK button to validate your answer.
개발자: Moon photo is copyright NASA. The space sounds come from Tuxpaint and Vegastrike which are released under the GPL license. The transportation images are copyright Franck Doucet. Dates of Transportation are based on those found in <https://www.wikipedia.org>.
설명: Draw the picture by clicking on the selected points.
필요 조건: Can move the mouse and click accurately on points.
설명서: Draw the picture by clicking on each point in sequence. Each time a point is selected the next blue one appears.
설명: Listen to a letter and click on it.
필요 조건: Visual letter-recognition.
목표: Letter-name recognition.
설명서: A letter is spoken. Click on the matching letter in the main area. You can listen to the letter again by clicking on the mouth icon.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space: select an item
- Tab: repeat the question
설명: Listen to a letter and click on it.
필요 조건: Visual letter-recognition.
목표: Letter-name recognition.
설명서: A letter is spoken. Click on the matching letter in the main area. You can listen to the letter again by clicking on the mouth icon.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space: select an item
- Tab: repeat the question
설명: Catch all the swimming fish before they leave the fish tank.
필요 조건: Can move mouse and click on the correct place.
목표: Motor coordination: moving the hand precisely.
설명서: Catch all the moving fish by clicking or touching them with your finger.
설명: Click on the right color.
필요 조건: Identifying colors.
목표: This activity teaches you to recognize different colors.
설명서: Listen to the color and click on the matching duck.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: select an answer
- Tab: repeat the question
설명: The fireman needs to stop the fire, but the hose is blocked.
목표: Fine motor coordination.
설명서: Move the mouse or your finger over the lock which is represented as a red part in the hose-pipe. This will move it, bringing it, part by part, up to the fire. Be careful, if you move off the hose, the lock will go backward.
설명: Tux is hungry. Help him find fish by counting to the correct ice spot.
필요 조건: Can read numbers on a domino.
목표: Tux is hungry. Help him find fish by counting to the correct ice spot.
설명서: Click on the domino to show how many ice spots there are between Tux and the fish. Click the domino with the right mouse button to count backwards. When done, click on the OK button or hit the Enter key.
설명: Place the items in the best way to count them.
필요 조건: Basic enumeration.
목표: Numeration training.
설명서: First, properly organize the items so that you can count them. Then, click on an item of the answers list in the top left area and enter the corresponding answer with the keyboard.
Keyboard controls:
Keyboard controls:
- Up arrow: select next item
- Down arrow: select previous item
- Digits: enter your answer for the selected item
- Enter: validate your answer (if the 'Validate answers' option is set to 'OK button')
설명: Create and simulate a digital electric schema.
필요 조건: Requires some basic understanding of the concept of digital electronics.
목표: Create a digital electric schema with a real time simulation of it.
설명서: Drag electrical components from the side bar and drop them in the working area.
- To connect two terminals with a wire, click on a first terminal, then on a second terminal.
- The simulation is updated in real time by any user action.
- In the working area, you can move the components by dragging them.
- In the side bar, you can click on the tool icon to access the tool menu.
- To delete a component or a wire, select the delete tool (cross icon) from the tool menu, and click on the component or on the wire you want to delete.
- To deselect a terminal or the delete tool, click on any empty area.
- You can rotate the selected component using the rotate buttons (circle arrow icons) from the tool menu.
- You can read information about the selected component using the info button (i icon) from the tool menu.
- You can zoom in or out the working area using the + and - keys, using the zoom buttons from the tool menu, or using pinch gestures on a touchscreen.
- You can pan the working area by clicking on an empty area and dragging it.
- You can click on a switch component to open and close it.
설명: Learn and memorize the braille system.
목표: Let children discover the braille system.
설명서: The screen has 3 sections: an interactive braille cell, an instruction telling you the character to reproduce, and at the top the braille characters to use as a reference. Each level teaches a set of 10 characters. Reproduce the requested character in the interactive braille cell.
You can open the braille chart by clicking on the blue braille cell icon.
Keyboard controls:
You can open the braille chart by clicking on the blue braille cell icon.
Keyboard controls:
- Digits: 1 to 6 select/deselect the corresponding dots
- Space: open or close the braille chart
설명: Flip the cards to match a division with its result.
필요 조건: Divisions
목표: Practice divisions.
설명서: Each card is hiding either a division, or a result. You have to match the divisions with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
Division memory game against Tux
math memory arithmetic memory-math-div-tux
JB BUTET & Timothée Giet
설명: Flip the cards to match a division with its result, playing against Tux.
필요 조건: Divisions.
목표: Practice divisions.
설명서: Each card is hiding either a division, or a result. You have to match the divisions with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Practice the division operation.
필요 조건: Division of small numbers.
목표: Find the result of the division within a limited period of time.
설명서: A division is displayed on the screen. Quickly find the result and use your computer's keyboard or the on-screen keypad to type it. You have to be fast and submit the answer before the penguins in their balloon land!
Keyboard controls:
Keyboard controls:
- Digits: type your answer
- Backspace: delete the last digit in your answer
- Enter: validate your answer
설명: Play the end of the chess game against Tux.
설명서: In this activity you discover the chess game by playing only the end of a game. It displays the possible target positions for any selected piece which helps the children understand how pieces moves.
You can achieve a mate sooner if you follow these simple rules:
Trying to drive your opponent's king in the corner.
Explanation: this way your opponent's king would have only 3 directions to move instead of 8 from a better position.
'Making a trap'. Use your pawns as baits.
Explanation: this way you can lure your opponent out of his 'comfort zone'.
Be patient enough.
Explanation: don't rush too quick, be patient. Let yourself think a little bit and try to predict your opponent's future moves, so that you can catch him or secure your pieces from his attacks.
You can achieve a mate sooner if you follow these simple rules:
Trying to drive your opponent's king in the corner.
Explanation: this way your opponent's king would have only 3 directions to move instead of 8 from a better position.
'Making a trap'. Use your pawns as baits.
Explanation: this way you can lure your opponent out of his 'comfort zone'.
Be patient enough.
Explanation: don't rush too quick, be patient. Let yourself think a little bit and try to predict your opponent's future moves, so that you can catch him or secure your pieces from his attacks.
개발자: The chess engine is p4wn <https://github.com/douglasbagnall/p4wn>.
설명: Complete language learning activities.
필요 조건: Reading.
목표: Enrich your vocabulary in your native language or in a foreign one.
설명서: Review a set of words. Each word is shown with a voice, a text and an image.
When done, you will have some exercises to recognize the text from the voice and the image, then only from the voice, and finally an exercise to type the text.
In the configuration, you can select the language you want to learn.
Keyboard controls:
When done, you will have some exercises to recognize the text from the voice and the image, then only from the voice, and finally an exercise to type the text.
In the configuration, you can select the language you want to learn.
Keyboard controls:
- Arrows: navigate
- Space or Enter: select an item from the list
- Enter: validate your answer when the OK button is visible
- Tab: repeat the word
개발자: Images originally released by the Art4Apps project (https://web.archive.org/web/20120908214126/http://www.art4apps.org/) under CC BY-SA 3.0 license. Upscaled and smoothed derivative images.
설명: Flip the cards to match a number with a picture.
목표: Numeration training, memory.
설명서: Each card is hiding either a picture with a number of items, or a number. You have to match the numbers with the corresponding pictures.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Move the helicopter to catch the clouds having even or odd numbers.
목표: Numeration training.
설명서: Catch the clouds with an odd or even number, in the right order. With a keyboard, use the arrow keys to move the helicopter. With a pointing device, just click or tap on the target location. To know which number you have to catch you can either remember it or check the number on the bottom right corner.
Keyboard controls:
Keyboard controls:
- Arrows: move the helicopter
설명: Learn about farm animals, what sounds they make, and interesting facts.
목표: Learn to associate animal sounds with the animal name and what the animal looks like.
설명서: There are three levels in this game.
In level one, players enjoy exploring each animal on the screen. Click on an animal and learn about it, what its name is, what sound it makes, and what it looks like. Study well this information, because you will be tested in level 2 and 3.
In level two, a random animal sound is played and you must find which animal makes this sound. Click on the corresponding animal. If you'd like to hear the animal sound repeated, click on the play button.
In level three, a random text prompt is displayed and you must click on the animal that matches the text.
In level one, players enjoy exploring each animal on the screen. Click on an animal and learn about it, what its name is, what sound it makes, and what it looks like. Study well this information, because you will be tested in level 2 and 3.
In level two, a random animal sound is played and you must find which animal makes this sound. Click on the corresponding animal. If you'd like to hear the animal sound repeated, click on the play button.
In level three, a random text prompt is displayed and you must click on the animal that matches the text.
설명: Explore monuments around the world.
필요 조건: Knowledge of different monuments.
목표: Learn about various monuments from around the world and remember their location.
설명서: Click on the spots to learn about the monuments and then locate them on the map.
개발자: Photos taken from Wikipedia.
- "Chichen Itza 3" by Daniel Schwen (https://commons.wikimedia.org/wiki/File:Chichen_Itza_3.jpg), CC BY-SA 4.0
- "1 cristor redentor 2014" by Chensiyuan (https://commons.wikimedia.org/wiki/File:1_cristor_redentor_2014.jpg), CC BY-SA 4.0
- "Taj Mahal, Agra, India" by Yann (https://commons.wikimedia.org/wiki/File:Taj_Mahal,_Agra,_India.jpg), CC BY-SA 4.0
설명: Learn about world animals, interesting facts and their location on a map.
목표: Learn about various wild animals from around the world and remember where they live.
설명서: There are two levels in this game.
In level one, players enjoy exploring each animal on the screen. Click on the question mark, and learn about the animal, what its name is, and what it looks like. Study well this information, because you will be tested in level 2.
In level two, a random text prompt is displayed and you must click on the animal that matches the text.
In level one, players enjoy exploring each animal on the screen. Click on the question mark, and learn about the animal, what its name is, and what it looks like. Study well this information, because you will be tested in level 2.
In level two, a random text prompt is displayed and you must click on the animal that matches the text.
설명: Learn about the music of the world.
목표: Develop a better understanding of the variety of music present in the world.
설명서: There are three levels in this activity.
In the first level, enjoy exploring music from around the world. Click on each suitcase to learn about the music from that area, and listen to a short sample. Study well, because you will be tested in level 2 and 3.
In the second level you will hear a sample of music, and you must select the location that corresponds to this music. Click on the play button if you'd like to hear the music again.
In the third level, you must select the location that matches the text description on the screen.
In the first level, enjoy exploring music from around the world. Click on each suitcase to learn about the music from that area, and listen to a short sample. Study well, because you will be tested in level 2 and 3.
In the second level you will hear a sample of music, and you must select the location that corresponds to this music. Click on the play button if you'd like to hear the music again.
In the third level, you must select the location that matches the text description on the screen.
개발자: Images from https://commons.wikimedia.org/wiki, https://archive.org
- "Onalaska-Practice6" by Tom Harpel (https://commons.wikimedia.org/wiki/File:Onalaska-Practice6.jpg), CC BY 2.0
- "Australia Aboriginal Culture 009" by Steve Evans (https://commons.wikimedia.org/wiki/File:Australia_Aboriginal_Culture_009.jpg), CC BY 2.0
- "Lunny irvine o flynn glackin" by candyschwartz (https://commons.wikimedia.org/wiki/File:Lunny_irvine_o_flynn_glackin.jpg), CC BY 2.0
- "08-rock-n-roll" by Karel Schmiedberger (https://commons.wikimedia.org/wiki/File:08-rock-n-roll.ogg), CC BY 3.0
- "The Wind that Shakes the Barley" by peakfiddler (https://commons.wikimedia.org/wiki/File:The_Wind_that_Shakes_the_Barley.ogg), CC BY 3.0
설명: Select the name you should call this family member.
필요 조건: Reading skills.
목표: Learn the relationships in a family, according to the lineal system used in most Western societies.
설명서: A family tree is shown.
The circles are linked with lines to mark the relations. Married couples are marked with a ring on the link.
You are the person in the white circle. Select the name you should call the person in the orange circle.
The circles are linked with lines to mark the relations. Married couples are marked with a ring on the link.
You are the person in the white circle. Select the name you should call the person in the orange circle.
설명: Find the correct date and select it on the calendar.
필요 조건: Basics of calendar.
목표: Learn how to count days and find a date on a calendar.
설명서: Read the instructions and perform the requested calculation to find the date. Then select this date on the calendar, and validate your answer by clicking on the OK button.
In some levels, you need to find the day of the week for a given date. In this case, click on the corresponding day of the week in the list.
Keyboard controls:
In some levels, you need to find the day of the week for a given date. In this case, click on the corresponding day of the week in the list.
Keyboard controls:
- Arrows: navigate through the answers
- Space or Enter: validate your answer
설명: Drag and Drop the shapes on their respective targets.
설명서: Complete the puzzle by dragging each piece on the side to the matching space in the puzzle.
개발자: The images are from Wikimedia Commons.
- "Chateau de Chenonceau 2008" by Ra-smit (https://commons.wikimedia.org/wiki/File:Chateau_de_Chenonceau_2008.jpg), CC BY-SA 3.0
- "Egeskov Slot spejling" by Malene Thyssen (https://commons.wikimedia.org/wiki/File:Egeskov_Slot_spejling.jpg), CC BY-SA 3.0
- "Eilean Donan castle - 95mm" by Guillaume Piolle (https://commons.wikimedia.org/wiki/File:Eilean_Donan_castle_-_95mm.jpg), CC BY 3.0
- "DK Fanoe Windmill01" by Cnyborg (https://commons.wikimedia.org/wiki/File:DK_Fanoe_Windmill01.JPG), CC BY-SA 3.0
- "Pyramids at Gizah" by Ricardo Liberato (https://commons.wikimedia.org/wiki/File:Pyramids_at_Gizah.jpg), CC BY-SA 2.0
- "Louvre 2007 02 24 c" by Benh LIEU SONG (https://commons.wikimedia.org/wiki/File:Louvre_2007_02_24_c.jpg), CC BY-SA 3.0
- "Nagoya Castle(Edit2)" by Base64 (https://commons.wikimedia.org/wiki/File:Nagoya_Castle(Edit2).jpg), CC BY-SA 3.0
- "NotreDameDeParis" by Sanchezn (https://commons.wikimedia.org/wiki/File:NotreDameDeParis.jpg), CC BY-SA 3.0
- "Castle Neuschwanstein" by Softeis (https://commons.wikimedia.org/wiki/File:Castle_Neuschwanstein.jpg), CC BY-SA 3.0
- "Sydney Opera House - Dec_2008" by David Iliff (https://commons.wikimedia.org/wiki/File:Sydney_Opera_House_-_Dec_2008.jpg), CC BY-SA 3.0
- "Taj Mahal in March 2004" by Dhirad (https://commons.wikimedia.org/wiki/File:Taj_Mahal_in_March_2004.jpg), CC BY-SA 3.0
- "Tour Eiffel Wikimedia Commons" by Benh LIEU SONG (https://commons.wikimedia.org/wiki/File:Tour_Eiffel_Wikimedia_Commons.jpg), CC BY-SA 3.0
- "Tower Bridge London Feb 2006" by David Iliff (https://commons.wikimedia.org/wiki/File:Tower_Bridge_London_Feb_2006.jpg), CC BY-SA 4.0
설명: Determine if a hand is a right or a left hand.
목표: Distinguish right and left hands from different points of view. Spatial representation.
설명서: You can see a hand: is it a left hand or a right hand? Click on the left button, or the right button depending on the displayed hand.
Keyboard controls:
Keyboard controls:
- Left arrow: left hand answer
- Right arrow: right hand answer
설명: Practice money usage by giving Tux his change.
필요 조건: Can count.
목표: Tux bought different items from you and shows you his money. You must give him back his change. At higher levels, several items are displayed, and you must first calculate the total price.
설명서: Click on the coins or on the notes at the bottom of the screen to pay. If you want to remove a coin or a note, click on it on the upper screen area.
Keyboard controls:
Keyboard controls:
- Left and Right arrows: navigate inside an area
- Space or Enter: select an item
- Tab: navigate between the bottom and the top areas
Give Tux his change, including cents
math money measures money_back_cents
Bruno Coudoin & Timothée Giet
설명: Practice money usage by giving Tux his change.
필요 조건: Can count.
목표: Tux bought different items from you and shows you his money. You must give him back his change. At higher levels, several items are displayed, and you must first calculate the total price.
설명서: Click on the coins or on the notes at the bottom of the screen to pay. If you want to remove a coin or a note, click on it on the upper screen area.
Keyboard controls:
Keyboard controls:
- Left and Right arrows: navigate inside an area
- Space or Enter: select an item
- Tab: navigate between the bottom and the top areas
설명: Guide the Number Muncher to the expressions that equal the number at the bottom of the screen.
목표: Practice addition, multiplication, division and subtraction.
설명서: Guide the Number Muncher to the expressions that equal the number at the bottom of the screen.
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
- Arrows: navigate
- Space: swallow the numbers
설명: Guide the Number Muncher to all the factors of the number at the bottom of the screen.
목표: Learn about multiples and factors.
설명서: The factors of a number are all the numbers that divide that number evenly. For example, the factors of 6 are 1, 2, 3 and 6. 4 is not a factor of 6 because 6 cannot be divided into 4 equal pieces. If one number is a multiple of a second number, then the second number is a factor of the first number. You can think of multiples as families, and factors are the people in those families. So 1, 2, 3 and 6 all fit into the 6 family, but 4 belongs to another family.
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
- Arrows: navigate
- Space: swallow the numbers
설명: Guide the Number Muncher to all the expressions that do not equal the number at the bottom of the screen.
목표: Practice addition, subtraction, multiplication and division.
설명서: If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
Take care to avoid the Troggles.
Keyboard controls:
- Arrows: navigate
- Space: swallow the numbers
설명: Guide the Number Muncher to all the multiples of the number at the bottom of the screen.
목표: Learn about multiples and factors.
설명서: The multiples of a number are all the numbers that are equal to the original number times another number. For example, 24, 36, 48 and 60 are all multiples of 12. 25 is not a multiple of 12 because there isn't any number that can be multiplied by 12 to get 25. If one number is a factor of a second number, then the second number is a multiple of the first number. You can think of multiples as families, and factors are the people who belong to those families. The factor 5, has parents 10, grandparents 15, great-grandparents 20, great-great-grandparents 25, and every extra step of 5 is another great- in front! But the number 5 does not belong to the 8 or 23 families. You can't fit any number of 5s into 8 or 23 with nothing left over. So 8 isn't a multiple of 5, nor is 23. Only 5, 10, 15, 20, 25 ... are multiples (or families or steps) of 5.
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
- Arrows: navigate
- Space: swallow the numbers
설명: Guide the Number Muncher to all the prime numbers.
목표: Learn about prime numbers.
설명서: Prime numbers are numbers that are only divisible by themselves and 1. For example, 3 is a prime number, but 4 isn't (because 4 is divisible by 2). You can think of prime numbers as very small families: they only ever have two people in them! Only themselves and 1. You can't fit any other numbers into them with nothing left over. 5 is one of these lonely numbers (only 5 × 1 = 5), but you can see that 6 has 2 and 3 in its family as well (6 × 1 = 6, 2 × 3 = 6). So 6 is not a prime number.
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
If you have a keyboard you can use the arrow keys to move and press space to swallow the numbers. With a mouse you can click on the block next to your position to move and click again to swallow the numbers. With a touch screen you can do like with a mouse or swipe anywhere in the direction you want to move and tap to swallow the numbers.
Take care to avoid the Troggles.
Keyboard controls:
- Arrows: navigate
- Space: swallow the numbers
설명: Color the graph so that no two adjacent nodes have the same color.
필요 조건: Ability to distinguish different colors/shapes, sense of positions.
목표: Learn to distinguish between different colors/shapes and learn about relative positions.
설명서: Place colors/shapes on the graph so that no two adjacent nodes have the same color. Select a node, then select an item in the list to place it on the node.
Keyboard controls:
Keyboard controls:
- Right and Left arrows: navigate
- Space: select an item
설명: Introduction to the concept of gravity.
목표: Move the spaceship to avoid hitting the planets and reach the space station.
설명서: Move the spaceship with the left and right keys, or with the buttons on the screen for mobile devices. Try to stay near the center of the screen and anticipate by looking at the size and direction of the arrow showing the gravity force.
Keyboard controls:
Keyboard controls:
- Left and Right arrows: move the spaceship
설명: Help Tux escape the cave by finding the hidden number.
필요 조건: Numbers.
설명서: Read the instructions that give you the range of the number to find. Enter a number in the top right entry box. You will be told if your number is higher or lower than the one to find. Then try again until you find the correct answer. The distance between Tux and the right side of the screen represents how far you are from the number to find. If Tux is over or under the vertical center of the screen, it means your number is over or under the number to find.
Keyboard controls:
Keyboard controls:
- Digits: enter a number
- Backspace: erase a number
설명: Guess the algebraic expression and drag the tiles to get a result equal to the Guesscount.
필요 조건: Knowledge of arithmetic operations.
목표: Intuition and practice of algebraic-like calculations.
설명서: Drag the appropriate numbers and the operators to the boxes to obtain the number to guess in the instruction.
설명: Read a list of words and say if a given word is in it.
필요 조건: Reading.
목표: Reading training in a limited time.
설명서: A word is shown on the board. A list of words, displayed horizontally, will appear and disappear. Did the given word appear in the list?
설명: Guide Tux out of the invisible maze.
설명서: Use the arrow keys or swipe the screen to move Tux to the door. Use the maze icon or the spacebar to switch between invisible and visible modes. Visible mode just gives you an indication of your position, like a map. You cannot move Tux in visible mode.
At the first levels, Tux walks comfortably, one step on each move request, through the maze.
For larger mazes, there is a special walking mode, called "run-fast-mode". If this run-fast-mode is enabled, Tux will run all the way automatically until he reaches a fork and you have to decide which way to go further.
You can see whether this mode is enabled or not, by looking at Tux's feet: If Tux is barefooted, "run-fast-mode" is disabled. And if he wears red sport shoes, "run-fast-mode" is enabled.
At higher levels, run-fast-mode will be enabled automatically. If you want to use this feature in earlier levels or want to disable it in advanced levels, click on the "barefoot / sportshoe" icon in the upper left corner of the screen to toggle the run-fast-mode.
Keyboard controls:
At the first levels, Tux walks comfortably, one step on each move request, through the maze.
For larger mazes, there is a special walking mode, called "run-fast-mode". If this run-fast-mode is enabled, Tux will run all the way automatically until he reaches a fork and you have to decide which way to go further.
You can see whether this mode is enabled or not, by looking at Tux's feet: If Tux is barefooted, "run-fast-mode" is disabled. And if he wears red sport shoes, "run-fast-mode" is enabled.
At higher levels, run-fast-mode will be enabled automatically. If you want to use this feature in earlier levels or want to disable it in advanced levels, click on the "barefoot / sportshoe" icon in the upper left corner of the screen to toggle the run-fast-mode.
Keyboard controls:
- Arrows: navigate
- Space: switch between invisible and visible modes
Land safe
sciences experiment land_safe
Matilda Bernard (Gtk+), Holger Kaelberer (Qt Quick) & Timothée Giet
설명: Pilot the spaceship towards the green landing area.
목표: Understand the acceleration caused by the gravity.
설명서: The acceleration caused by the gravity experienced by the spaceship is directly proportional to the mass of the planet and inversely proportional to the square of the distance from the center of the planet. Thus, with every planet the acceleration will differ and as the spaceship comes closer and closer to the planet the acceleration increases.
In first levels, use the up/down keys to control the thrust and the right/left keys to control the direction. On touch screens you can control the rocket through the corresponding on-screen buttons.
In higher levels, you can use the right/left keys to rotate the spaceship. By rotating the spaceship you can trigger an acceleration in non-vertical direction using the up/down keys.
The landing platform is green if your speed is fine for a safe landing.
The accelerometer on the right border shows your rocket's overall vertical acceleration including gravitational force. In the upper green area of the accelerometer your acceleration is higher than the gravitational force, in the lower red area it's lower, and on the blue baseline in the yellow middle area the two forces cancel each other out.
Keyboard controls:
In first levels, use the up/down keys to control the thrust and the right/left keys to control the direction. On touch screens you can control the rocket through the corresponding on-screen buttons.
In higher levels, you can use the right/left keys to rotate the spaceship. By rotating the spaceship you can trigger an acceleration in non-vertical direction using the up/down keys.
The landing platform is green if your speed is fine for a safe landing.
The accelerometer on the right border shows your rocket's overall vertical acceleration including gravitational force. In the upper green area of the accelerometer your acceleration is higher than the gravitational force, in the lower red area it's lower, and on the blue baseline in the yellow middle area the two forces cancel each other out.
Keyboard controls:
- Up and Down arrows: control the thrust of the rear engine
- Left and Right arrows: at first levels, move to the sides; at higher levels, rotate the spaceship
설명: Learn additions with small numbers.
목표: Learn additions by counting their result.
설명서: An addition is displayed on the screen. Calculate the result, fill the corresponding number of circles and validate your answer.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space: select or deselect a circle
- Enter: validate your answer
설명: Learn decimals with small numbers.
목표: Learn decimals by counting how many squares are needed to represent the decimal number.
설명서: A decimal number is displayed. Drag the arrow to select a part of the bar, and drag the selected part of the bar to the empty area. Repeat these steps until the number of dropped bars corresponds to the displayed decimal number. Then click on the OK button to validate your answer.
Keyboard controls:
Keyboard controls:
- Enter: validate your answer
설명: Learn digits from 0 to 9.
목표: Learn digits by counting their corresponding value.
설명서: A digit is displayed on the screen. Fill the corresponding number of circles and validate your answer.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space: select or deselect a circle
- Enter: validate your answer
- Tab: say the digit again
설명: Learn to represent a quantity of objects.
목표: Learn quantities by counting how many oranges are needed to represent the requested quantity.
설명서: A quantity is requested. Drag the arrow to select a number of oranges, and drag the selected oranges to the empty area. Repeat these steps until the number of dropped oranges corresponds to the requested quantity. Then click on the OK button to validate your answer.
Keyboard controls:
Keyboard controls:
- Enter: validate your answer
설명: Learn subtractions with small numbers.
목표: Learn subtractions by counting their result.
설명서: A subtraction is displayed on the screen. Calculate the result, fill the corresponding number of circles and validate your answer.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space: select or deselect a circle
- Enter: validate your answer
설명: Learn how to tell the time on an analog clock.
필요 조건: The concept of time.
목표: Learn units of time (hours, minutes and seconds). Set the time on an analog clock.
설명서: Set the clock to the given time. Drag the different hands to control their respective unit. The shortest hand indicates the hours, a longer hand indicates the minutes, and the longest hand indicates the seconds.
설명: A letter is written. Some words are displayed, and you must find the word or the words in which this letter appears.
필요 조건: Spelling, letter recognition.
목표: Select all the words which contain the given letter.
설명서: A letter is displayed on the flag attached to the plane. Select all the words in the list containing this letter and then press the OK button.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space: select an item
- Enter: validate your answer
설명: The goal is to turn off all the lights.
목표: The goal is to turn off all the lights.
설명서: The effect of pressing a window is to toggle the state of that window, and of its immediate vertical and horizontal neighbors. You must turn off all the lights. If you click on Tux, the solution is shown.
개발자: The solver algorithm is described on Wikipedia. To know more about the Lights Off game: <https://en.wikipedia.org/wiki/Lights_Out_(game)>
설명: Complete the arrangement of fruit.
목표: Logic training activity.
설명서: Look at the two sequences. Each fruit in the first sequence has been replaced by another fruit in the second sequence. Complete the second sequence by using the correct fruit, after studying this pattern.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: select an item
설명: Press the left and right arrow keys at the same time, to make the ball go in a straight line.
설명서: Press the left and right arrow keys at the same time, to make the ball go in a straight line. On a touch screen you have to touch the two hands at the same time.
설명: Drag and drop the items to match them.
필요 조건: Cultural references.
목표: Motor coordination. Conceptual matching.
설명서: In the main board area, a set of objects is displayed. In the side panel, another set of objects is shown. Each object in the side panel corresponds logically to one object in the main board area. Drag each object from the side panel to the correct spot in the main area.
설명: Help Tux get out of this maze.
설명서: Use the arrow keys or swipe the screen to move Tux to the door.
In first levels, Tux walks comfortably, one step on each move request, through the maze.
For larger mazes, there is a special walking mode, called "run-fast-mode". If this run-fast-mode is enabled, Tux will run all the way automatically until he reaches a fork and you have to decide which way to go further.
You can see whether this mode is enabled or not, by looking at Tux's feet: If Tux is barefoot, "run-fast-mode" is disabled. And if he wears red sport shoes, "run-fast-mode" is enabled.
At higher levels, run-fast-mode will be enabled automatically. If you want to use this feature in earlier levels or want to disable it in advanced levels, click on the "barefoot / sportshoe" icon in the upper left corner of the screen to toggle the run-fast-mode.
Keyboard controls:
In first levels, Tux walks comfortably, one step on each move request, through the maze.
For larger mazes, there is a special walking mode, called "run-fast-mode". If this run-fast-mode is enabled, Tux will run all the way automatically until he reaches a fork and you have to decide which way to go further.
You can see whether this mode is enabled or not, by looking at Tux's feet: If Tux is barefoot, "run-fast-mode" is disabled. And if he wears red sport shoes, "run-fast-mode" is enabled.
At higher levels, run-fast-mode will be enabled automatically. If you want to use this feature in earlier levels or want to disable it in advanced levels, click on the "barefoot / sportshoe" icon in the upper left corner of the screen to toggle the run-fast-mode.
Keyboard controls:
- Arrows: navigate
설명: Reproduce a sound sequence.
필요 조건: Move and click the mouse.
목표: Ear-training activity.
설명서: Listen to the sound sequence played, and repeat it by clicking on the xylophone's bars. You can listen again the sound sequence by clicking on the repeat button.
설명: Flip the cards to find the matching pairs.
필요 조건: Mouse-manipulation.
목표: Train your memory and remove all the cards.
설명서: Each card has a picture on the hidden side, and each card has a twin with exactly the same picture. Click on a card to see its hidden picture, and try to match the twins. You can only flip two cards at once, so you need to remember where a picture is, while you look for its twin. When you flip the twins, they both disappear.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
개발자:
- "Card Flip" by f4ngy, (https://freesound.org/people/f4ngy/sounds/240776/), CC BY 3.0
설명: Flip the cards to find the matching pairs, playing against Tux.
필요 조건: Mouse-manipulation.
목표: Train your memory and remove all the cards.
설명서: Each card has a picture on the hidden side, and each card has a twin with exactly the same picture. Click on a card to see its hidden picture, and try to match the twins. You can only flip two cards at once, so you need to remember where a picture is, while you look for its twin. When you flip the twins, they both disappear.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Use the mousewheel to approach the rockwall and look for gold nuggets.
필요 조건: You should be familiar with moving the mouse and clicking.
목표: Learn to use the mousewheel or the zoom / pinch gesture to zoom in and out.
설명서: Looking at the rockwall, you can see a sparkle somewhere. Move next to this sparkle and use the mousewheel or the zoom gesture to zoom in. When you reach the maximum zoom level, a gold nugget will appear at the position of the sparkle. Click on the gold nugget to collect it.
After collecting the nugget, use the mousewheel or the pinch gesture to zoom out again. When you reach the minimum zoom level, another sparkle will appear, showing the next gold nugget to collect. Collect enough nuggets to complete the level.
The wagon in the lower right corner of the screen will tell you the number of already collected nuggets and the total number of nuggets to collect in this level.
After collecting the nugget, use the mousewheel or the pinch gesture to zoom out again. When you reach the minimum zoom level, another sparkle will appear, showing the next gold nugget to collect. Collect enough nuggets to complete the level.
The wagon in the lower right corner of the screen will tell you the number of already collected nuggets and the total number of nuggets to collect in this level.
개발자: Thanks to the Tuxpaint team for providing the following sounds under GPL:
- realrainbow.ogg - used when a new gold nugget appears
- metalpaint.wav - remixed and used when a gold nugget is collected
설명: Draw the image on the empty grid as if you saw it in a mirror.
설명서: First, select the proper color from the toolbar. Click on the grid and drag to paint, then release the click to stop painting.
Keyboard controls:
Keyboard controls:
- Digits: select a color
- Arrows: navigate in the grid
- Space or Enter: paint
설명: Find the missing letter to complete the word.
필요 조건: Word reading.
목표: Training reading skills.
설명서: A picture is displayed in the main area, and an incomplete word is written under the picture. Click on the missing letter to complete the word, or type the letter on your keyboard.
Keyboard controls:
Keyboard controls:
- Tab: repeat the word
설명: Discover light color mixing.
목표: Mix primary colors to match the given color.
설명서: This activity teaches how mixing primary light colors works (additive mixing).
Mixing light colors is just the opposite of mixing paint colors. The more light you add, the lighter the resulting color becomes. Primary colors of light are red, green and blue.
Change the color by moving the sliders on the torches or by clicking on the + and - buttons. Then click on the OK button to validate your answer.
Mixing light colors is just the opposite of mixing paint colors. The more light you add, the lighter the resulting color becomes. Primary colors of light are red, green and blue.
Change the color by moving the sliders on the torches or by clicking on the + and - buttons. Then click on the OK button to validate your answer.
설명: Discover paint color mixing.
목표: Mix primary colors to match the given color.
설명서: This activity teaches how mixing primary paint colors works (subtractive mixing).
Paints and inks absorb different colors of the light falling on it, subtracting it from what you see. The more ink you add, the more light is absorbed, and the darker the resulting color becomes. We can mix just three primary colors to make many new colors. The primary colors for paint/ink are cyan (a special shade of blue), magenta (a special shade of pink), and yellow.
Change the color by moving the sliders on the tubes of paint or by clicking on the + and - buttons. Then click on the OK button to validate your answer.
Paints and inks absorb different colors of the light falling on it, subtracting it from what you see. The more ink you add, the more light is absorbed, and the darker the resulting color becomes. We can mix just three primary colors to make many new colors. The primary colors for paint/ink are cyan (a special shade of blue), magenta (a special shade of pink), and yellow.
Change the color by moving the sliders on the tubes of paint or by clicking on the + and - buttons. Then click on the OK button to validate your answer.
설명: Practice money usage.
필요 조건: Can count.
목표: You must buy different items and give the exact price. At higher levels, several items are displayed, and you must first calculate the total price.
설명서: Click or tap on the coins or on the notes at the bottom of the screen to pay. If you want to remove a coin or a note, click or tap on it on the upper screen area.
Keyboard controls:
Keyboard controls:
- Left and Right arrows: navigate inside an area
- Space or Enter: select an item
- Tab: navigate between the bottom and the top areas
설명: Practice money usage including cents.
필요 조건: Can count.
목표: You must buy the different items and give the exact price. At higher levels, several items are displayed, and you must first calculate the total price.
설명서: Click on the coins or on the notes at the bottom of the screen to pay. If you want to remove a coin or a note, click on it on the upper screen area.
Keyboard controls:
Keyboard controls:
- Left and Right arrows: navigate inside an area
- Space or Enter: select an item
- Tab: navigate between the bottom and the top areas
설명: Move the mouse or touch the screen to erase the area and discover the background.
필요 조건: Mouse-manipulation.
목표: Motor-coordination.
설명서: Move the mouse or touch the screen on the blocks to make them disappear.
개발자:
- "Alpaca" by Dietmar Rabich / Wikimedia Commons (https://commons.wikimedia.org/wiki/File:D%C3%BClmen,_B%C3%B6rnste,_Alpakas_--_2020_--_5338.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Pollinationn" by aussiegall (https://commons.wikimedia.org/wiki/File:Pollinationn.jpg), CC BY 2.0, changes: cropping, sharpening
- "Butterfly" by © 2014 Jee & Rani Nature Photography (https://commons.wikimedia.org/wiki/File:Parantica_aglea_at_Nayikayam_Thattu.jpg), CC BY-SA 4.0, changes: non-linear rescaling, cropping, sharpening
- "Calf" by Basile Morin (https://commons.wikimedia.org/wiki/File:Close-up_photograph_of_a_calf%27s_head_looking_at_the_viewer_with_pricked_ears_in_Don_Det_Laos.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Camels" by Alexandr frolov (https://commons.wikimedia.org/wiki/File:Camelus_bactrianus_in_western_Mongolia_02.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Caterpillar" by Ivar Leidus (https://commons.wikimedia.org/wiki/File:Papilio_machaon_-_Daucus_carota_-_Keila.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Chamaeleo chamaeleon Samos Griechenland" by Benny Trapp (https://commons.wikimedia.org/wiki/File:BennyTrapp_Chamaeleo_chamaeleon_Samos_Griechenland.jpg), CC BY 3.0, changes: cropping, sharpening
- "Cheetah" by Charles J. Sharp (https://commons.wikimedia.org/wiki/File:Cheetah_(Acinonyx_jubatus)_female_2.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Dolphin" by טל שמע (https://commons.wikimedia.org/wiki/File:Eilat_Dolphin_Reef_(3).jpg), CC BY-SA 4.0, changes: cropping, sharpening, removed a few spots
- "Flying fox" by Andrew Mercer (https://commons.wikimedia.org/wiki/File:Grey_headed_flying_fox_-_AndrewMercer_IMG41848.jpg), CC BY-SA 4.0, changes: cropping, sharpening, removed a few spots
- "Hylobates lar - Kaeng Krachan WB" by JJ Harrison (https://commons.wikimedia.org/wiki/File:Hylobates_lar_-_Kaeng_Krachan_WB.jpg), CC BY 3.0, changes: cropping
- "Goat" by JoachimKohlerBremen (https://commons.wikimedia.org/wiki/File:Walliser_Schwarzhalsziege,_Belalp_2014.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Gorilla" by Charles J. Sharp (https://commons.wikimedia.org/wiki/File:Mountain_gorilla_(Gorilla_beringei_beringei)_female_2.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Gosling" by Stephan Sprinz (https://commons.wikimedia.org/wiki/File:Graugans-G%C3%B6ssel_(anser_anser)_im_Naturschutzgebiet_Wagbachniederung.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Heron" by Stephan Sprinz (https://commons.wikimedia.org/wiki/File:Purpurreiher_(ardea_purpurea)_im_Flug_-_NSG_Wagbachniederung_1.jpg), CC BY-SA 4.0, changes: cropping
- "Horse" by Eatcha (https://commons.wikimedia.org/wiki/File:Zaniskari_Horse_in_Ladakh.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "A posing kitten" by GalgenTX (https://commons.wikimedia.org/wiki/File:A_posing_kitten_(Flickr).jpg), CC BY 2.0, changes: cropping, colour adjustment, sharpening
- "Long nosed monkey" by Charles J. Sharp (https://commons.wikimedia.org/wiki/File:Proboscis_monkey_(Nasalis_larvatus)_female_and_baby.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Macaque" by PJeganathan (https://commons.wikimedia.org/wiki/File:Bonnet_macaques_in_anaimalai_hills_JEG2730.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Meerkats" by Charles J. Sharp (https://commons.wikimedia.org/wiki/File:Meerkat_(Suricata_suricatta)_Tswalu.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Northern harrier" by Frank Schulenburg (https://commons.wikimedia.org/wiki/File:Female_northern_harrier_in_flight-1142.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Nubian ibex" by Rhododendrites (https://commons.wikimedia.org/wiki/File:Juvenile_Nubian_ibex_in_Mitzpe_Ramon_(40409).jpg), CC BY-SA 4.0, changes: non-linear rescaling, cropping, sharpening
- "Penguin" Photo: Gordon Leggett / Wikimedia Commons (https://commons.wikimedia.org/wiki/File:2019-03-03_Chinstrap_penguin_on_Barrientos_Island,_Antarctica.jpg), CC BY-SA 4.0, changes: non-linear rescaling, cropping, sharpening
- "Rhinoceros" by Charles J. Sharp (https://commons.wikimedia.org/wiki/File:Indian_rhinoceros_(Rhinoceros_unicornis)_4.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Spoonbills" by Ryzhkov Sergey (https://commons.wikimedia.org/wiki/File:%D0%9A%D0%BE%D1%81%D0%B0%D1%80%D1%96_%D0%B2_%D0%B4%D0%B5%D0%BB%D1%8C%D1%82%D1%96_%D0%94%D1%83%D0%BD%D0%B0%D1%8E.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Squirrel" by Роман Наумов (https://commons.wikimedia.org/wiki/File:%D0%91%D1%96%D0%BB%D0%BA%D0%B0_%D0%BD%D0%B0_%D0%B4%D0%B5%D1%80%D0%B5%D0%B2%D1%96_%D0%B2_%D0%B4%D0%B5%D0%BD%D0%B4%D1%80%D0%BE%D0%BF%D0%B0%D1%80%D0%BA%D1%83_%D0%9E%D0%BB%D0%B5%D0%BA%D1%81%D0%B0%D0%BD%D0%B4%D1%80%D1%96%D1%8F.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Swans" by Charles J. Sharp (https://commons.wikimedia.org/wiki/File:Mute_swans_(Cygnus_olor)_and_cygnets.jpg), CC BY-SA 4.0, changes: cropping, sharpening
- "Toucan" by LG Nyqvist (https://commons.wikimedia.org/wiki/File:Pteroglossus_torquatus_Costa_Rica.jpg), CC BY-SA 4.0, changes: cropping, sharpening
Multiplication and division memory game
math memory arithmetic memory-math-mult-div
JB BUTET & Timothée Giet
설명: Flip the cards to match a multiplication or a division with its result.
필요 조건: Multiplications, divisions.
목표: Practice multiplications and divisions.
설명서: Each card is hiding either an operation (a multiplication or a division), or a result. You have to match the operations with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
Multiplication and division memory game against Tux
math memory arithmetic memory-math-mult-div-tux
JB BUTET & Timothée Giet
설명: Flip the cards to match a multiplication or a division with its result, playing against Tux.
필요 조건: Multiplications, divisions.
목표: Practice multiplications and divisions.
설명서: Each card is hiding either an operation (a multiplication or a division), or a result. You have to match the operations with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Flip the cards to match a multiplication with its result.
필요 조건: Multiplications.
목표: Practice multiplications.
설명서: Each card is hiding either a multiplication, or a result. You have to match the multiplications with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
Multiplication memory game against Tux
math memory arithmetic memory-math-mult-tux
JB BUTET & Timothée Giet
설명: Flip the cards to match a multiplication with its result, playing against Tux.
필요 조건: Multiplications.
목표: Practice multiplications.
설명서: Each card is hiding either a multiplication, or a result. You have to match the multiplications with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Practice the multiplication operation.
필요 조건: Multiplication tables from 1 to 10.
목표: Learn to multiply numbers within a limited period of time.
설명서: A multiplication is displayed on the screen. Quickly find the result and use your computer's keyboard or the on-screen keypad to type the product of the numbers. You have to be fast and submit the answer before the penguins in their balloon land!
Keyboard controls:
Keyboard controls:
- Digits: type your answer
- Backspace: delete the last digit in your answer
- Enter: validate your answer
설명: Click on the correct musical instruments.
목표: Learn to recognize musical instruments.
설명서: Click on the correct musical instrument.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: select an item
- Tab: repeat the instrument sound
설명: Learn the names of the notes, in bass and treble clef.
목표: Develop a good understanding of note position and naming convention. Prepare for the 'Play Piano' and 'Piano Composition' activities.
설명서: Identify the notes correctly and score 100% to complete a level.
설명:
목표: Form mills (lines of 3 pieces) to remove Tux's pieces until he has only 2 pieces left or can not move anymore.
설명서: Play with the computer. First take turns to place nine pieces, and then take turns to move your pieces.
설명:
목표: Form mills (lines of 3 pieces) to remove your opponent's pieces until your opponent has only 2 pieces left or can not move anymore.
설명서: Play with a friend. First take turns to place nine pieces, and then take turns to move your pieces.
설명: Move the helicopter to catch the clouds in the correct order.
목표: Numeration training.
설명서: Catch the clouds in increasing order. With a keyboard, use the arrow keys to move the helicopter. With a pointing device, just click or tap on the target location. To know which number you have to catch you can either remember it or check the number on the bottom right corner.
Keyboard controls:
Keyboard controls:
- Arrows: move the helicopter
설명: Count the number of dots on the dice before it reaches the ground.
필요 조건: Counting skills.
목표: In a limited time, count the number of dots.
설명서: Type the number of dots you see on each falling dice.
Keyboard controls:
Keyboard controls:
- Digits: type your answer
설명: Count the number on the domino before it reaches the ground.
필요 조건: Counting skills.
목표: Count a number in a limited time.
설명서: Type the number you see on each falling domino.
Keyboard controls:
Keyboard controls:
- Digits: type your answer
설명: Tux is in trouble, and needs to take his boat through a lock. Help Tux and find out how a canal lock works.
목표: Understand how a canal lock works.
설명서: You are in charge of the canal lock. Open the gates and the locks in the right order, so that Tux can travel through the gates in both directions.
설명: Arrange the given letters in alphabetical order or in reverse alphabetical order as requested.
필요 조건: Reading.
목표: Learn the alphabetical order.
설명서: You are provided with some letters. Drag and drop them to the upper area in alphabetical order or in reverse alphabetical order as requested.
Ordering numbers
math numeration ordering_numbers
Rudra Nil Basu , Emmanuel Charruau , Harsh Kumar & Timothée Giet
설명: Arrange the given numbers in ascending or descending order as requested.
필요 조건: Counting.
목표: Compare numbers.
설명서: You are provided with some numbers. Drag and drop them to the upper area in ascending or descending order as requested.
설명: Arrange the given words to form a meaningful sentence.
필요 조건: Reading.
목표: Order words to form meaningful sentences.
설명서: You are provided with some words. Drag and drop them to the upper area to form a meaningful sentence.
설명: Follow the given directions to help Tux reach the target.
설명서: Click on the grid squares to move Tux following the given directions.
The directions are relative to the current orientation of Tux.
This means that UP moves forward, DOWN moves backward, LEFT moves to the left side of Tux and RIGHT moves to the right side of Tux.
The directions are relative to the current orientation of Tux.
This means that UP moves forward, DOWN moves backward, LEFT moves to the left side of Tux and RIGHT moves to the right side of Tux.
설명: Move Tux along the path to reach the target.
설명서: Use the arrow buttons to move Tux along the path until he reaches the target.
The directions are absolute, they do not depend on the current orientation of Tux.
Keyboard controls:
The directions are absolute, they do not depend on the current orientation of Tux.
Keyboard controls:
- Arrows: directions
설명: Move Tux along the path to reach the target.
설명서: Use the arrow buttons to move Tux along the path until he reaches the target.
The directions are relative to the current orientation of Tux.
This means that UP moves forward, DOWN moves backward, LEFT moves to the left side of Tux and RIGHT moves to the right side of Tux.
Keyboard controls:
The directions are relative to the current orientation of Tux.
This means that UP moves forward, DOWN moves backward, LEFT moves to the left side of Tux and RIGHT moves to the right side of Tux.
Keyboard controls:
- Arrows: directions
설명: Double click or double tap on any side of the goal in order to score.
설명서: Double click or double tap on a side of the goal to kick the ball. You can double click the left, right or middle mouse button. If you do not double click fast enough, Tux catches the ball. You must click on it to bring it back to its initial position.
설명: Learn how the piano keyboard works, and how notes are written on a musical staff.
필요 조건: Familiarity with note naming conventions.
목표: Develop an understanding of music composition, and increase interest in making music with a piano keyboard. This activity covers many fundamental aspects of music, but there is much more to explore about music composition. If you enjoy this activity but want a more advanced tool, try downloading Minuet (https://minuet.kde.org/), an open source software for music education or MuseScore (https://musescore.org), an open source music notation tool.
설명서: This activity has several levels, each level adding a new functionality to the previous one.
- Level 1: Basic piano keyboard (white keys only) where users can experiment with clicking the colored rectangle keys to write music.
- Level 2: The musical staff switches to bass clef, so notes are lower than in previous level.
- Level 3: Option to choose between treble and bass clef, addition of black keys (sharp keys).
- Level 4: Flat notation used for black keys.
- Level 5: Option to select a note duration (whole, half, quarter, eighth notes).
- Level 6: Addition of rests (whole, half, quarter, eighth rests).
- Level 7: Save your compositions and load pre-defined or saved melodies.
- Digits 1 to 7: white keys
- F2 to F7: black keys
- Space: play
- Left and Right arrows: switch keyboard octave
- Backspace: undo
- Delete: erase selected note or everything
개발자: The synthesizer original code is from https://github.com/vsr83/miniSynth
설명: Drive the submarine to the end point.
필요 조건: Move and click using the mouse, physics basics.
목표: Learn how to control a submarine.
설명서: Control the various parts of the submarine (the engine, ballast tanks and diving planes) to reach the end point.
Keyboard controls:
Engine
Keyboard controls:
Engine
- D or Right arrow: increase the velocity
- A or Left arrow: decrease the velocity
- W or Up arrow: switch filling of the central ballast tank
- S or Down arrow: switch flushing of the central ballast tank
- R: switch filling of the left ballast tank
- F: switch flushing of the left ballast tank
- T: switch filling of the right ballast tank
- G: switch flushing of the right ballast tank
- +: increase diving planes angle
- -: decrease diving planes angle
설명: The version in GCompris is the international draughts.
목표: Capture all the pieces of your opponent before your opponent captures all of yours.
설명서: Checkers is played by two opponents, on opposite sides of the gameboard. One player has the dark pieces; the other has the light pieces. Players alternate turns. A player may not move an opponent's piece. A move consists of moving a piece diagonally to an adjacent unoccupied square. If the adjacent square contains an opponent's piece, and the square immediately beyond it is vacant, the piece may be captured (and removed from the game) by jumping over it.
Only the dark squares of the checkered board are used. A piece may move only diagonally into an unoccupied square. Capturing is mandatory. The player without pieces remaining, or who cannot move due to being blocked, loses the game.
When a man reaches the crownhead or kings row (the farthest row forward), it becomes a king, and is marked by placing an additional piece on top of the first man, and acquires additional powers including the ability to move backwards. If there is a piece in a diagonal that a king can capture, he can move any distance along the diagonal, and may capture an opposing man any distance away by jumping to any of the unoccupied squares immediately beyond it.
Only the dark squares of the checkered board are used. A piece may move only diagonally into an unoccupied square. Capturing is mandatory. The player without pieces remaining, or who cannot move due to being blocked, loses the game.
When a man reaches the crownhead or kings row (the farthest row forward), it becomes a king, and is marked by placing an additional piece on top of the first man, and acquires additional powers including the ability to move backwards. If there is a piece in a diagonal that a king can capture, he can move any distance along the diagonal, and may capture an opposing man any distance away by jumping to any of the unoccupied squares immediately beyond it.
개발자: The checkers library is draughts.js <https://github.com/shubhendusaurabh/draughts.js>. Manual is from wikipedia <https://en.wikipedia.org/wiki/Draughts>
설명: The version in GCompris is the international draughts.
목표: Capture all the pieces of your opponent before your opponent captures all of yours.
설명서: Checkers is played by two opponents, on opposite sides of the gameboard. One player has the dark pieces; the other has the light pieces. Players alternate turns. A player may not move an opponent's piece. A move consists of moving a piece diagonally to an adjacent unoccupied square. If the adjacent square contains an opponent's piece, and the square immediately beyond it is vacant, the piece may be captured (and removed from the game) by jumping over it.
Only the dark squares of the checkered board are used. A piece may move only diagonally into an unoccupied square. Capturing is mandatory. The player without pieces remaining, or who cannot move due to being blocked, loses the game.
When a man reaches the crownhead or kings row (the farthest row forward), it becomes a king, and is marked by placing an additional piece on top of the first man, and acquires additional powers including the ability to move backwards. If there is a piece in a diagonal that a king can capture, he can move any distance along the diagonal, and may capture an opposing man any distance away by jumping to any of the unoccupied squares immediately beyond it.
Only the dark squares of the checkered board are used. A piece may move only diagonally into an unoccupied square. Capturing is mandatory. The player without pieces remaining, or who cannot move due to being blocked, loses the game.
When a man reaches the crownhead or kings row (the farthest row forward), it becomes a king, and is marked by placing an additional piece on top of the first man, and acquires additional powers including the ability to move backwards. If there is a piece in a diagonal that a king can capture, he can move any distance along the diagonal, and may capture an opposing man any distance away by jumping to any of the unoccupied squares immediately beyond it.
개발자: The checkers library is draughts.js <https://github.com/shubhendusaurabh/draughts.js>. Manual is from wikipedia <https://en.wikipedia.org/wiki/Draughts>
설명:
설명서: In this activity you discover the chess game by playing against the computer. It displays the possible target positions for any selected piece which helps the children understand how pieces moves. At first level the computer is fully random to give more chances to the children. As level increases, the computer plays better.
You can achieve a mate sooner if you follow these simple rules:
Trying to drive your opponent's king in the corner.
Explanation: this way your opponent's king would have only 3 directions to move instead of 8 from a better position.
'Making a trap'. Use your pawns as baits.
Explanation: this way you can lure your opponent out of his 'comfort zone'.
Be patient enough.
Explanation: don't rush too quick, be patient. Let yourself think a little bit and try to predict your opponent's future moves, so that you can catch him or secure your pieces from his attacks.
You can achieve a mate sooner if you follow these simple rules:
Trying to drive your opponent's king in the corner.
Explanation: this way your opponent's king would have only 3 directions to move instead of 8 from a better position.
'Making a trap'. Use your pawns as baits.
Explanation: this way you can lure your opponent out of his 'comfort zone'.
Be patient enough.
Explanation: don't rush too quick, be patient. Let yourself think a little bit and try to predict your opponent's future moves, so that you can catch him or secure your pieces from his attacks.
개발자: The chess engine is p4wn <https://github.com/douglasbagnall/p4wn>.
설명:
설명서: In this activity you discover the chess game by playing against a friend. It displays the possible target positions for any selected piece which helps the children understand how pieces moves.
You can achieve a mate sooner if you follow these simple rules:
Trying to drive your opponent's king in the corner.
Explanation: this way your opponent's king would have only 3 directions to move instead of 8 from a better position.
'Making a trap'. Use your pawns as baits.
Explanation: this way you can lure your opponent out of his 'comfort zone'.
Be patient enough.
Explanation: don't rush too quick, be patient. Let yourself think a little bit and try to predict your opponent's future moves, so that you can catch him or secure your pieces from his attacks.
You can achieve a mate sooner if you follow these simple rules:
Trying to drive your opponent's king in the corner.
Explanation: this way your opponent's king would have only 3 directions to move instead of 8 from a better position.
'Making a trap'. Use your pawns as baits.
Explanation: this way you can lure your opponent out of his 'comfort zone'.
Be patient enough.
Explanation: don't rush too quick, be patient. Let yourself think a little bit and try to predict your opponent's future moves, so that you can catch him or secure your pieces from his attacks.
설명: Play the Oware strategy game against Tux.
목표: The game starts with four seeds in each house. The objective of the game is to capture more seeds than one's opponent. Since the game has only 48 seeds, capturing 25 is sufficient to win the game. Since there is an even number of seeds, it is possible for the game to end in a draw, where each player has captured 24.
설명서: Players take turns moving the seeds. On a turn, a player chooses one of the six houses under their control. The player removes all seeds from that house, and distributes them, dropping one in each house counter-clockwise from this house, in a process called sowing. Seeds are not distributed into the end scoring houses, nor into the house drawn from. The starting house is always left empty; if it contained 12 (or more) seeds, it is skipped, and the twelfth seed is placed in the next house.
Capturing occurs only when a player brings the count of an opponent's house to exactly two or three with the final seed he sowed in that turn. This always captures the seeds in the corresponding house, and possibly more: if the previous-to-last seed also brought an opponent's house to two or three, these are captured as well, and so on until a house is reached which does not contain two or three seeds or does not belong to the opponent. The captured seeds are placed in the player's scoring house. However, if a move would capture all of an opponent's seeds, the capture is forfeited since this would prevent the opponent from continuing the game, and the seeds are instead left on the board.
If an opponent's houses are all empty, the current player must make a move that gives the opponent seeds. If no such move is possible, the current player captures all seeds in their own territory, ending the game.
Capturing occurs only when a player brings the count of an opponent's house to exactly two or three with the final seed he sowed in that turn. This always captures the seeds in the corresponding house, and possibly more: if the previous-to-last seed also brought an opponent's house to two or three, these are captured as well, and so on until a house is reached which does not contain two or three seeds or does not belong to the opponent. The captured seeds are placed in the player's scoring house. However, if a move would capture all of an opponent's seeds, the capture is forfeited since this would prevent the opponent from continuing the game, and the seeds are instead left on the board.
If an opponent's houses are all empty, the current player must make a move that gives the opponent seeds. If no such move is possible, the current player captures all seeds in their own territory, ending the game.
설명: Play the Oware strategy game with a friend.
목표: The game starts with four seeds in each house. The objective of the game is to capture more seeds than one's opponent. Since the game has only 48 seeds, capturing 25 is sufficient to win the game. Since there is an even number of seeds, it is possible for the game to end in a draw, where each player has captured 24.
설명서: Players take turns moving the seeds. On a turn, a player chooses one of the six houses under their control. The player removes all seeds from that house, and distributes them, dropping one in each house counter-clockwise from this house, in a process called sowing. Seeds are not distributed into the end scoring houses, nor into the house drawn from. The starting house is always left empty; if it contained 12 (or more) seeds, it is skipped, and the twelfth seed is placed in the next house.
Capturing occurs only when a player brings the count of an opponent's house to exactly two or three with the final seed he sowed in that turn. This always captures the seeds in the corresponding house, and possibly more: if the previous-to-last seed also brought an opponent's house to two or three, these are captured as well, and so on until a house is reached which does not contain two or three seeds or does not belong to the opponent. The captured seeds are placed in the player's scoring house. However, if a move would capture all of an opponent's seeds, the capture is forfeited since this would prevent the opponent from continuing the game, and the seeds are instead left on the board.
If an opponent's houses are all empty, the current player must make a move that gives the opponent seeds. If no such move is possible, the current player captures all seeds in their own territory, ending the game.
Capturing occurs only when a player brings the count of an opponent's house to exactly two or three with the final seed he sowed in that turn. This always captures the seeds in the corresponding house, and possibly more: if the previous-to-last seed also brought an opponent's house to two or three, these are captured as well, and so on until a house is reached which does not contain two or three seeds or does not belong to the opponent. The captured seeds are placed in the player's scoring house. However, if a move would capture all of an opponent's seeds, the capture is forfeited since this would prevent the opponent from continuing the game, and the seeds are instead left on the board.
If an opponent's houses are all empty, the current player must make a move that gives the opponent seeds. If no such move is possible, the current player captures all seeds in their own territory, ending the game.
설명:
필요 조건: Knowledge of musical notation and musical staff.
목표: Understand how the piano keyboard can play music as written on the musical staff.
설명서: Some notes are played on the staff. Click on the keyboard keys matching the notes on the staff.
On levels 1 to 5 you will practice treble clef notes and on levels 6 to 10 you will practice bass clef notes.
Keyboard controls:
On levels 1 to 5 you will practice treble clef notes and on levels 6 to 10 you will practice bass clef notes.
Keyboard controls:
- Space: play
- Digits 1 to 7: white keys
- F2 to F7: black keys
- Backspace or Delete: undo
개발자: The synthesizer original code is from https://github.com/vsr83/miniSynth
설명:
필요 조건: Simple understanding of musical rhythm.
목표: Learn to follow a rhythm accurately.
설명서: Listen to the rhythm played. When you're ready, click on the drum following the same rhythm. If you clicked at correct times, another rhythm is played. If not, you must try again.
Odd levels display a vertical line on the staff following the rhythm: click on the drum when the line is in the middle of the notes.
Even levels are harder, because there is no vertical line. You must read the notes length and play the rhythm accordingly. You can also click on the metronome to hear the quarter notes as reference.
Click on the reload button if you want to replay the rhythm.
Keyboard controls:
Odd levels display a vertical line on the staff following the rhythm: click on the drum when the line is in the middle of the notes.
Even levels are harder, because there is no vertical line. You must read the notes length and play the rhythm accordingly. You can also click on the metronome to hear the quarter notes as reference.
Click on the reload button if you want to replay the rhythm.
Keyboard controls:
- Space bar: click on the drum
- Enter or Return: replay the rhythm
- Up and Down: increase or decrease the tempo
- Tab: Start or stop the metronome if it is visible
설명: Click on a pair corresponding to the given relation.
필요 조건: Reading, moving and clicking with the mouse.
목표: Learn the relationships in a family, according to the lineal system used in most Western societies.
설명서: A family tree is shown, with some instructions.
The circles are linked with lines to mark the relations. Married couples are marked with a ring on the link.
Click on a pair of family members which corresponds to the given relation.
The circles are linked with lines to mark the relations. Married couples are marked with a ring on the link.
Click on a pair of family members which corresponds to the given relation.
설명: Find the boy's position in relation to the box.
필요 조건: Can read.
목표: Describe the relative position of an object.
설명서: You will see different images representing a boy and a box, you have to find out the position of the boy in relation to the box and select the correct answer.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: validate selected answer
설명: Hit the target and count your points.
필요 조건: Can move the mouse, can read numbers and count up to 15 for the first level.
목표: Throw darts at a target and count your score.
설명서: Check the speed and direction of the target, and then click on it to launch a dart. When all your darts are thrown, you are asked to count your score. Enter the score with the keyboard.
설명: This activity teaches to program Tux to reach its goal using simple instructions like move forward, turn left or right.
필요 조건: Can read instructions, and think logically to find a path.
목표: Tux is hungry. Help him find fish by programming him to the correct ice spot.
설명서: Choose the instructions from the menu, and arrange them in order to lead Tux to his goal.
Keyboard controls:
To add an instruction in main/procedure/loop area, select it from instructions area, then switch to the main/procedure/loop area and press Space.
To modify an instruction in main/procedure/loop area, select it from main/procedure/loop area, then switch to instructions area, choose the new instruction and press Space.
Keyboard controls:
- Left and Right arrows: navigate inside selected area
- Up and Down arrows: increase or decrease the loop counter if the loop area is selected
- Space: select an instruction or append selected instruction in main/procedure/loop area
- Tab: switch between instructions area and main/procedure/loop area
- Delete: remove selected instruction from main/procedure/loop area
- Enter: run the code or reset Tux when it fails to reach the fish
To add an instruction in main/procedure/loop area, select it from instructions area, then switch to the main/procedure/loop area and press Space.
To modify an instruction in main/procedure/loop area, select it from main/procedure/loop area, then switch to instructions area, choose the new instruction and press Space.
설명: Rebuild the train model at the top of the screen.
목표: Memory training.
설명서: A train is displayed for a few seconds. Rebuild it at the top of the screen by dragging the appropriate items. Remove an item from the answer area by dragging it down.
Keyboard Controls:
Keyboard Controls:
- Arrows: navigate in the sample area and in the answer area
- Space: add an item from the samples to the answer area, or swap two items in the answer area
- Delete or Backspace: remove the selected item from the answer area
- Enter or Return: submit your answer
설명: Put each item at the same place as in the given example.
설명서: First select an item from the list, and then click on a spot of the mosaic to place the item.
Keyboard controls:
Keyboard controls:
- Arrows: navigate inside an area
- Space or Enter: select or place an item
- Tab: navigate between the item list and the mosaic
설명: Draw perfectly the given image on the empty grid.
설명서: First, select the proper color from the toolbar. Click on the grid and drag to paint, then release the click to stop painting.
Keyboard controls:
Keyboard controls:
- Digits: select a color
- Arrows: navigate in the grid
- Space or Enter: paint
설명: Help Tux get out of this maze (moves are relative).
설명서: Use the arrow keys or swipe the screen to move Tux to the door.
In this maze, the moves are relative (first person). Left and right are used to turn and up to move forward.
At the first levels, Tux walks comfortably, one step on each move request, through the maze.
For larger mazes, there is a special walking mode, called "run-fast-mode". If this run-fast-mode is enabled, Tux will run all the way automatically until he reaches a fork and you have to decide which way to go further.
You can see whether this mode is enabled or not, by looking at Tux's feet: If Tux is barefooted, "run-fast-mode" is disabled. And if he wears red sport shoes, "run-fast-mode" is enabled.
At higher levels, run-fast-mode will be enabled automatically. If you want to use this feature in earlier levels or want to disable it in advanced levels, click on the "barefoot / sportshoe" icon in the upper left corner of the screen to toggle the run-fast-mode.
Keyboard controls:
In this maze, the moves are relative (first person). Left and right are used to turn and up to move forward.
At the first levels, Tux walks comfortably, one step on each move request, through the maze.
For larger mazes, there is a special walking mode, called "run-fast-mode". If this run-fast-mode is enabled, Tux will run all the way automatically until he reaches a fork and you have to decide which way to go further.
You can see whether this mode is enabled or not, by looking at Tux's feet: If Tux is barefooted, "run-fast-mode" is disabled. And if he wears red sport shoes, "run-fast-mode" is enabled.
At higher levels, run-fast-mode will be enabled automatically. If you want to use this feature in earlier levels or want to disable it in advanced levels, click on the "barefoot / sportshoe" icon in the upper left corner of the screen to toggle the run-fast-mode.
Keyboard controls:
- Left and Right arrows: turn left and right
- Down arrow: turn backward
- Up arrow: move forward
설명: Tux has come back from fishing on his boat. Bring the electrical system back up so he can have light in his home.
목표: Learn about an electrical system based on renewable energy.
설명서: Click on different active elements: sun, cloud, dam, solar array, wind farm and transformers, in order to reactivate the entire electrical system. When the system is back up and Tux is in his home, push the light button for him. To win you must switch on all the consumers while all the producers are up.
설명:
목표: Learn how to read roman numerals and do the conversion to and from arabic numerals.
설명서: Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet.
Learn the rules to read Roman numerals and practice converting numbers to and from arabic numerals. Click on the OK button to validate your answer.
Keyboard controls:
Learn the rules to read Roman numerals and practice converting numbers to and from arabic numerals. Click on the OK button to validate your answer.
Keyboard controls:
- Digits: type arabic numerals
- Letters: type roman numerals (with I, V, X, L, C, D and M)
- Enter: validate your answer
설명: Try to split the pieces of candy between a given number of children.
필요 조건: Know how to count.
목표: Learn division of numbers.
설명서: Follow the instructions shown on the screen: first, drag the given number of boys/girls to the center, then drag pieces of candy to each child's rectangle.
If there is a rest, it needs to be placed inside the candy jar.
If there is a rest, it needs to be placed inside the candy jar.
설명: Reproduce the given tower.
필요 조건: Mouse-manipulation.
목표: Reproduce the tower on the right in the empty area.
설명서: Drag and Drop one top piece at a time, from one tower to another, to reproduce the tower on the right in the empty area.
개발자: Concept taken from EPI games.
설명: Answer the questions with a correctness of 100%.
목표: Learn information about the solar system. If you want to learn more about astronomy, try downloading KStars (https://edu.kde.org/kstars/) or Stellarium (https://stellarium.org/) which are astronomy Free Software.
설명서: Click on a planet or on the Sun, and answer the corresponding questions. Each question contains 4 options. One of those is 100% correct. Try to answer the questions until you get 100% in the closeness meter.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: select
- Escape: return to previous screen
- Tab: view the hint (only when the hint icon is visible)
설명: Flip the cards to match a subtraction with its result.
필요 조건: Subtractions.
목표: Practice subtractions.
설명서: Each card is hiding either a subtraction, or a result. You have to match the subtractions with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
Subtraction memory game against Tux
math memory arithmetic memory-math-minus-tux
JB BUTET & Timothée Giet
설명: Flip the cards to match a subtraction with its result, playing against Tux.
필요 조건: Subtractions.
목표: Practice subtractions.
설명서: Each card is hiding either a subtraction, or a result. You have to match the subtractions with their result.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card
설명: Practice the subtraction operation.
필요 조건: Subtraction of small numbers.
목표: Learn to find the difference between two numbers within a limited period of time.
설명서: A subtraction is displayed on the screen. Quickly find the result and use your computer's keyboard or the on-screen keypad to type it. You have to be fast and submit the answer before the penguins in their balloon land!
Keyboard controls:
Keyboard controls:
- Digits: type your answer
- Backspace: delete the last digit in your answer
- Enter: validate your answer
Subtractions with decimal numbers
math arithmetic learn_decimals_subtractions
Mariam Fahmy & Timothée Giet
설명: Learn subtractions with decimal numbers.
목표: Learn subtractions with decimal numbers by counting how many squares need to be subtracted to represent the result.
설명서: A subtraction with two decimal numbers is displayed. The first number from the subtraction is represented with bars. Each bar represents one unit, and each square in the bar represent one tenth of this unit. Click on the squares to subtract the second number and represent the result of the operation
If the answer is correct, type the corresponding result, and click on the OK button to validate your answer.
Keyboard controls:
If the answer is correct, type the corresponding result, and click on the OK button to validate your answer.
Keyboard controls:
- Enter: validate your answer
- Numbers: type the result
설명: Symbols must be unique in a row, in a column, and (if defined) in each region.
필요 조건: Completing the puzzle requires patience and logical ability.
목표: The aim of the puzzle is to enter a symbol or numeral from 1 to 9 in each cell of a grid. In the official Sudoku the grid is 9×9 and made up of 3×3 subgrids (called 'regions'). In GCompris we start at lower levels with a simpler version using symbols and with no regions. In all cases the grid is presented with various symbols or numerals given in some cells (the 'givens'). Each row, column and region must contain only one instance of each symbol or numeral (Source <https://en.wikipedia.org/wiki/Sudoku>).
설명서: Select a number or a symbol on the left and click on its target position. GCompris will not let you enter invalid answer.
설명: Tux has hidden several items. Find them in the correct order.
목표: Tux has hidden several items. Find them in the correct order.
설명서: Click on the items until you find what you think is the correct answer. Then, click on the OK button. A black dot means that you found the correct item in the correct position, while a white dot means an item is correct but in the wrong position. At lower levels, Tux also gives you an indication with a black square on correct items in the correct position, and a white square on the correct items in the wrong position. In the levels 4 and 8 an item may be hidden several times.
You can use the right mouse button to flip the items in the opposite order, or the item chooser to directly pick an item from the list. Press two seconds on an item to automatically choose the last item selected in this position. Double click on a previously selected item in your guess history to mark it as 'correct'. Such marked items are automatically selected in your current and future guesses until you un-mark them, by double clicking on them again.
You can use the right mouse button to flip the items in the opposite order, or the item chooser to directly pick an item from the list. Press two seconds on an item to automatically choose the last item selected in this position. Double click on a previously selected item in your guess history to mark it as 'correct'. Such marked items are automatically selected in your current and future guesses until you un-mark them, by double clicking on them again.
설명: Move the tower to the right side.
목표: The object of the game is to move the entire stack to another peg, obeying the following rules:
only one disc may be moved at a time
no disc may be placed atop a smaller disc
only one disc may be moved at a time
no disc may be placed atop a smaller disc
설명서: Drag and drop the top pieces only from one peg to another, to reproduce the initial left side tower on the right peg.
개발자: The puzzle was invented by the French mathematician Edouard Lucas in 1883. There is a legend about a Hindu temple whose priests were constantly engaged in moving a set of 64 discs according to the rules of the Tower of Hanoi puzzle. According to the legend, the world would end when the priests finished their work. The puzzle is therefore also known as the Tower of Brahma puzzle. It is not clear whether Lucas invented this legend or was inspired by it. (source Wikipedia: https://en.wikipedia.org/wiki/Tower_of_hanoi)
설명: Guess the letters of the given word.
목표: This is a good exercise to improve reading and spelling skills.
설명서: You can enter the letters using the virtual keyboard on the screen or with the real keyboard.
If the option 'Display the image to find as hint' is activated, on every wrong try a part of the image representing the word will be revealed.
If the option 'Speak the words to find...' is activated, and if the corresponding voice is available, you will hear the word to find when three attempts are remaining.
If the option 'Display the image to find as hint' is activated, on every wrong try a part of the image representing the word will be revealed.
If the option 'Speak the words to find...' is activated, and if the corresponding voice is available, you will hear the word to find when three attempts are remaining.
설명: Move each item to recreate the image.
목표: Arrange the pieces in the right order.
설명서: Click or drag on any piece next to the empty space, and it will move to the empty space.
Keyboard controls:
Keyboard controls:
- Arrows: move a piece to the empty space.
설명: Review the major dates of the inventor of the braille system.
설명서: Read the history of Louis Braille, his biography, and the invention of the braille system. Click on the previous and next buttons to move between the story pages. At the end, arrange the sequence in chronological order.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: select an item and change its position
개발자: Louis Braille Video: <https://www.youtube.com/watch?v=9bdfC2j_4x4>
설명: Count how many stars are under the magic hat.
필요 조건: Additions.
목표: Learn additions.
설명서: Click on the hat to open it. How many stars went under it? Count carefully. Click on the bottom area to input your answer and on the OK button to validate it.
설명: Calculate how many stars are under the magic hat.
필요 조건: Subtractions.
목표: Learn subtractions.
설명서: Click on the hat to open it. Stars go in and a few stars escape. You have to calculate how many stars are still under the hat. Click on the bottom area to input your answer and on the OK button to validate it.
설명: The objective is to form a given shape.
필요 조건: Mouse-manipulation.
목표: From Wikipedia, the free encyclopedia. Tangram (Chinese: literally 'seven boards of cunning') is a Chinese puzzle. While the tangram is often said to be ancient, its existence has only been verified as far back as 1800. It consists of 7 pieces, called tans, which fit together to form a square; Using the square side as 1 unit, the 7 pieces contains:
5 right isosceles triangles, including:
- 2 small size ones (legs of 1)
- 1 medium size (legs of square root of 2)
- 2 large size (legs of 2)
1 square (side of 1) and
1 parallelogram (sides of 1 and square root of 2)
5 right isosceles triangles, including:
- 2 small size ones (legs of 1)
- 1 medium size (legs of square root of 2)
- 2 large size (legs of 2)
1 square (side of 1) and
1 parallelogram (sides of 1 and square root of 2)
설명서: Move a piece by dragging it. The symmetrical button appears on items that supports it. Click on the rotation button or drag around it to rotate selected piece. Check the activity 'Baby Puzzle' for a simpler introduction to tangram.
설명: Place three marks in a row.
목표: Place three marks in any horizontal, vertical, or diagonal row to win the game.
설명서: Play with the computer. Take turns to click on the square which you want to mark. The first player to create a line of 3 marks wins.
설명: Place three marks in a row.
목표: Place three marks in any horizontal, vertical, or diagonal row to win the game.
설명서: Play with a friend. Take turns to click on the square which you want to mark. The first player to create a line of 3 marks wins.
설명: Read a vertical list of words and say if a given word is in it.
필요 조건: Reading.
목표: Reading training in a limited time.
설명서: A word is shown on the board. A list of words, displayed vertically, will appear and disappear. Did the given word appear in the list?
설명: Tux has come back from fishing on his boat. Bring the water system back up so he can take a shower.
목표: Learn the water cycle.
설명서: Click on different active elements: sun, cloud, pumping station, and the sewage treatment plant, in order to reactivate the entire water system. When the system is back up and Tux is in the shower, push the shower button for him.
설명: Flip the cards to match a numeral with its number name.
필요 조건: Reading.
목표: Reading numbers, memory.
설명서: Each card is hiding either a numeral (a number written in figures), or a number name (a number written in words). You have to match the numerals with the corresponding number names.
Keyboard controls:
Keyboard controls:
- Arrows: navigate
- Space or Enter: flip the selected card