Press green flag to start; stop sign when it's finished; and spacebar to reset screen.
Scratch Cat draws a star. The user can choose how boxy or skinny to make the star - in other words, how sharp the angles are. This can work as a geometry lesson; have students figure out what angle turns are needed to draw a star. The user can also choose line thickness. I may add other features, such as choosing the star's size and color. (Or maybe you want to remix it and add features yourself.)
