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UPDATE:
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 #1

This 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.)

Scratch Warm Up #1a

WarmUp#1
For your first script, create these blocks.

When completed, the cat will bounce around in your game window.



Scratch Warm Up #1b

WarmUp#1
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.


Scratch Warm Up #1c

Next, can you add SOUND?
Can you make a sound effect whenever the cat touches the fence?
   
Picture
Picture
Picture
Picture
If you have difficulty getting the SOUND to work, here's a video to help.

Scratch Warm Up #1d

Before 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.
    

Picture
If you have difficulty with this, try this video to help.

Be sure to save your work from Warm Up #1.

Then, choose FILE --> NEW to be ready for the second warm up.

Warm Up Activity #2

This quick warm up activity helps understand how to make interactive visual changes.

Scratch Warm Up #2

WarmUp#1
Use the "Looks" palette to find "set color effect to 0".  
Then, use the "Sensing" palette to find "mouse x" and "mouse y".



Next:  Frogger (Page 1)
Up:     Return to Scratch 2 (Coding)


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