This 3.7V lithium battery is perfect for solar science fair projects involving panels. Also great for building an off-grid solar power system for camping, RVs, or boats. Multiples can be hooked together in series to get higher voltage or in parallel to acheive higher capacity.
This SUPER Erector Construction set is one of the best you'll find anywhere!
Use this kit to conduct experiments with models to learn about forces and simple machines!
Working model representing the sun, earth, and moon and their relationships.
Build a robot that's an artist too!
This classic desk toy will keep you amused!
The large realistic model has removable organs that can be studied and set back into the correct position.