Illusion Science Kit. Tease the brain and deceive the eye with these mind-bending illusions. Explore the wonder of optics through 20 simple but fascinating illusions. a detailed 20-page instruction booklet describes the science of optical illusions and how to create a wide range of illusory effects. This kit is ideal for introducing basic concepts of optics, light, and how the human eye works. Components include trick cards, a spinning top, 3-D picture cards, 3-D glasses, and more. Recommended for ages 8 and up.