Take a look! These unique child-size glasses and interchangeable lenses let students observe the world while learning about color. Each pair of glasses feature 8 easy-to-change lenses-2 each of red, yellow and blue and distortion lenses that let you see the world like a bug. Teaches primary colors as well as mixing to make secondary colors by combining up to 2 lenses per side. Allows additional instruction and kaleidoscopic fun when you use the lenses on their own. Includes color-mixing chart. Durable plastic glasses are sized just right for children, and wipe clean with a damp cloth. Sold as a pack of 2 Color Mixing Glasses. Recommended age 3+ years