A blister pack of 9 CR2032 Lithium Cell Batteries, usually used for remote controls, but, more frequently, computer motherboards. Each battery is 3V.
Find the hidden crystals when you open your own geodes from this fun set.
Easily assemble a working alarm motion detector!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
This project book and sample kit introduces you to shape-memory alloy technology!
This microscope is so versatile you can even take it with you on a job site!
This simple but amusing magnetic toy will keep you busy for hours!