High-quality weight with a hook fitted through the center allow you to hook weights together in tandem or use them one at a time.
Pass-through hooks are included on both sides of the weight!
Build your own 10 inch kaleidoscope with this great kit!
Get swept away by this fantastic robot kit that uses vibrations to move!
Learn all about the science of light, optics and visual perception with this wonderful kit!
This science kit is an essential introduction to physics knowledge!
This is a classic demonstration toy of the powers of magnetic fields!
This simple but amusing magnetic toy will keep you busy for hours!