Third graders are using recycled materials to create a spinning top. The top is made of two primary colors and equivalent fractions to a half. When spun, the two primary colors create the optical illusion of a secondary color. This is a dynamic way to explain what happens when we combine primary colors and create a secondary color. It was very exciting to see the colors combine, change, slow down and separate back to their primaries. I am having trouble getting the video to play. Sorry, just still shots for now.