The Color Wheel (9-1/4” diameter) provides a simple, visual aid for illustrating and teaching color mixing relationships. Easy to use and understand, the Color Wheel is a basic tool for teachers, students, artists and anyone making color selections. It includes Gray Scale, Tints, Tones, Shades and Results of mixing colors. The Color Wheel illustrates Color Harmonies (Complementary, Split Complementary, Triadic and more) as well as defines Primary Colors, Secondary Colors, Warm and Cool Colors, Basic Terms and more. Available in three sizes. The Big Wheel is a classroom or demonstration size wheel, measuring 26-1/4” in diameter. It is made of sturdy, durable construction and makes a perfect companion for the Color Wheel, Pocket Color Wheel, and Create-A-Color Wheel. The Big Color Wheel is easy to hang on a blackboard or place on an easel.