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!
Check out this high-quality gyroscope!
Discover how solar cells make electricity with this awesome kit!
The cards show the name of the element, the atomic number, group, natural state and common usages!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
This superb chemistry set features 350 mind-boggling experiments!
Perform awesome experiments using everyday materials found in any kitchen!