Standard glass 100mm petri dish. Great for chemistry experiments.
Petri dish size: 100mm (4 inch) in diameter x 20mm (3/4 inch) thick
This toy combines the wonders of Sea Monkeys and glow-in-the-dark fun, all in one!
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.
Easily assemble a working alarm motion detector!
Build 14 assorted solar robots, some of which can travel over water!
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
The Wimshurst Machine is a high quality static machine for student labs.