Build a rainbow maker that attaches to the window and casts rainbows around your room on a sunny day! With the materials included, build a triple-crystal, motorised rainbow maker that hangs to your window.You'll learn all about the best weather conditions to find and record rainbows in the wild. This fun STEM kit lets you have fun while learning about the subjects you may encounter in school: reflection/refraction, light and prisms. The kit includes: an instruction book faceted crystals silver rings motor suction cups alligator clips holographic sheet Requires 2x AA batteries, not included. What is Klutz? Klutz is a premium brand of book-based activity kits, designed to inspire creativity in every child. Our unique combination of crystal-clear instructions, custom tools and materials and hearty helpings of humour is 100% guaranteed to kick-start creativity. Super-clear instructions Open-ended creativity Rewarding reading Skills to build on Everything you need.