This toy seems to defy physical laws as it reverses its spinning direction. Bulk Packed.

The convex lens provides a magnified image of small objects.

Entertaining, beautiful and mysterious, this toy never fails to amaze.

A pocketable demonstrtion of the center of mass.

A pair of surprisingly powerful 2 inch magnets that produce a rattlesnake sound when they contact each other. A strange effect and lots of fun.

A fun air-propelled little car

Piezoelectrical rocks!

A semi-ellipsoidal top—it spins in only one direction, seeming to violate the angular-momentum conservation law of physics.

Use the sun to make things go.

Ulexite, the amazing fiber optic mineral.

Create and control a phenomenal vortex.

This portable and affordable microscope lets you examine nature on the go.