"It is like a wheel that goes around and around, and when two lines are on top of each other, it makes more colors and it makes more lines as it spins around." —Sandra, age five
My five-year-old daughter Sandra told me that she wanted to do something with Mathematica, and she had this idea of spinning lines and overlapping colors. I did the coding, but every creative decision was made by Sandra. This is her idea and her project.