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UPDATE:
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The instructions below are for the older Scratch 2.
For the newer Scratch 3 instructions, click here. |
Introduction to Scratch 2 - Warm Up Exercises
There are 2 different warm up exercises below.
- Warm Up #1 contains 4 videos to teach automated movement, sensing and sound.
- Warm Up #2 contains 1 video of how looks can change interactively.
Warm Up Activity #1This quick activity will teach students some coding techniques to make a sprite move independently around the Scratch game window. (Pay special attention to If and Sensing in 1b and 1d.)
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Scratch Warm Up #1a
For your first script, create these blocks.
When completed, the cat will bounce around in your game window. |
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Scratch Warm Up #1b
Complete the script above and then make it better!
Take out the "if on edge, bounce" and make your own "if" block. You will also want to create a fence using the Scratch graphic editor. When completed, the cat will bounce around inside your fenced area. |
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Scratch Warm Up #1cNext, can you add SOUND?
Can you make a sound effect whenever the cat touches the fence? |
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If you have difficulty getting the SOUND to work, here's a video to help.
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Scratch Warm Up #1dBefore we leave this example,
make a new fence using the left graphic buttons and create a new fence (called "boundary"). Then, try this different "touching" block. |
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If you have difficulty with this, try this video to help.
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Be sure to save your work from Warm Up #1.
Then, choose FILE --> NEW to be ready for the second warm up.
Then, choose FILE --> NEW to be ready for the second warm up.
Warm Up Activity #2This quick warm up activity helps understand how to make interactive visual changes.
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Scratch Warm Up #2
Use the "Looks" palette to find "set color effect to 0".
Then, use the "Sensing" palette to find "mouse x" and "mouse y". |
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