Euler’s Disk Spinning Science into Art Fascinating Physics Toy Ages 8 & Up, although I bought it as an adult because it is sooo cool and I’m a nerd! “You won’t believe your eyes and ears as the disc spins faster and louder!” It sparks scientific curiosity in all who interact with it! Feed blooming young scientific minds! Classroom aid. You truly have to see and hear it in front of you to be struck with awe! Perfect gift idea! Gently used pre-owned condition. Tags: Educational Fun Imaginative School Education Tool Learning Aid Scientific Phenomenon Spolling Gravity Holographic Hypnotic Physics Science Innovation Motivation Gift Idea Scientifically Inclined Inspiration Incredible Amazing Amusing Amaze your family and friends party conversation starter use your brain thinking cap fun