Experiment with 20 classic optical illusions included in this kit.nThe kit includes illusion trick cards, spinning top with illusion cards, 3D picture cards, markers, 3D glasses, and more.nA 20-page instruction book is included, describing the science of optical illusions and how to create a wide range of illusory effects.nPerfect for young scientists with an interest in optics.nRecommended for ages 7 years and up.nChallenge your childu0026#39;s imagination with 4M toys and kits.n4M educational toys cover a wide range of educational subjects and include science kits, arts and crafts kits, robotics kits, and more.n4M offers a wide range of toys and kits to let you build a clock, crochet a placemat, or turn your room into a planetarium--all in the name of making learning fun.nExperiment with over 20 optic activitiesnLearn the scientific explanations behind the optic activitiesnKit includes illusion tricks card, spinning top with illusion cards, 3D picture cards, markers, 3D glasses and morenChallenge your eyes with these classic illusionsnFor ages 7 and overnLearn the scientific principles behind optical illusions with the 4M Illusion Science kit. Experiment with 20 classic optical illusions included in this kit. The kit includes illusion trick cards, spinning top with illusion cards, 3D picture cards, markers, 3D glasses, and more. A 20-page instruction book is included, describing the science of optical illusions and how to create a wide range of illusory effects. Perfect for young scientists with an interest in optics. Recommended for ages 7 years and up.