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Activity : Interaction Puzzles

Ninja Instructions | Mentor Notes


What differentiates a Scratch Project from a still image or a video

Tackle these nine puzzles that engage some of the more advanced concepts in Scratcdh realted to interactivity. Each of these challenges has several possible solutions.


30-45 minutes each


Create a scratch program for each of the nine interaction puzzles. When you get a solution take some time to look at OTHER solutions in the studio so that you can see some of the alternatives.


  1. Puzzle 1: Whenever you press the B key, the sprite gets a little bigger. Whenever you press the S key, the sprite gets a little smaller.
  2. Puzzle 2: Whenever the sprite hears a loud sound it changes color.
  3. Puzzle 3: The player can move the sprite around using keys or the mouse. Whenever the sprite is in the top 25% of the screen it says “I like it up here”
  4. Puzzle 4: When the sprite touches something blue, it plays a high note. When the sprite touches something red, it plays a low note.
  5. Puzzle 5: Whenever two sprites collide one of them says “Excuse me”
  6. Puzzle 6: Whenever the cat spite gets near the dog sprite the dog turns and runs away from the cat.
  7. Puzzle 7: Whenever you click on the background a flower appears at that spot.
  8. Puzzle 8: Whenever you click on a sprite, all other sprites do a dance.
  9. Puzzle 9: Whenever you move the mouse-pointer, the sprite follows but doesn't touch the mouse-pointer.

Things to think about when you are done

  • Which puzzles did you work on?
  • What was your strategy for solving the puzzles?
  • Which puzzles helped you think about your game project?

Sharing your project in the studio

The studio for this activity is located at:


This project is based on materials from the the Creative Computing curriculum by Brennan, Balch, and Chung.

lev4/act_interactions_s.txt · Last modified: 2015/04/13 11:36 by jbschafer