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Using Scratch to Explore Turtle Geometry

Showing the process of drawing a flower in three steps.
Showing the process of drawing a flower in three steps.

For our exercise, we’re going to use a simple but powerful idea; if we instruct a sprite to turn a little and move a little, we create a curved line. To create a circle, the sprite needs to keep turning and moving until it makes a complete turn. Repeating the circle in a controlled way creates patterns.

Space Maze, velocity and speed

Scratch project to navigate a rocket through a maze of UFOs to show velocity.
Scratch project to navigate a rocket through a maze of UFOs to show velocity.

In the space maze game, the rocket will have the ability to fly up, right, down, and left at varying speeds. The player must navigate the rocket through a field of UFOs to land on the head. The maze, however, is randomly generated, requiring the player to carefully pick a path from the home base to the head.