Get deep, rich tones and quality sound with this excellent subwoofer speaker. It makes a great addition to your home theater system, or use it for science experiments with non-Newtonian fluids.
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
Build a model car that runs on hydrogen gas using a unique reversible fuel cell!
Dig deeper, and discover the fascinating crystal structures of minerals and rocks with this great kit!
Learn about hydrogen fuel cells with this incredible kit!
Use this awesome prism to teach about optics and light in the classroom setting!
Do micro-controller projects and program them using your own computer!