Students of all ages are fascinated by color and how we perceive it. For the main activity in this chapter, your class explores colors and visual perception by mixing colors in several ways. Students learn more about colors, light, vision, and color composition as they mix paints, spin two or more colors into new colors, and make discoveries about color perception in the human eye and brain. The preliminary activity dynamically introduces several important terms related to vision: refraction, reflection, and spectrum. Students also learn about the anatomy of the vertebrate eye, as they build and operate a simple eye model, complete with lens. In the Going Further section, the class has the opportunity to discover variables that can affect an individual’s perception of color.