Stem Explorations- Gears Building Set, Age: 8+, Set includes 140+ parts for a single child or team of 2 children to build 3 unique geared models: a Crank Fan, Car Window, Egg Beater, elementary-school aged children will be engaged in understanding Science, Etc.
Equilateral Prism, Material: Acrylic, Useful for experiments in Optics, Light Refraction and Wavelengths, Will create a rainbow (even in room light) by using the simple led light of a smart phone, User will need to create a small slit in a black piece of paper, Size: 3in Hx1in W