This apparatus is designed to demonstrate the principle of inertia. Simply release the plastic ball on top of the Plexiglass square which is set on the vertical post. Release the spring and the square shoots out. The ball falls into the concave recession in the post, remaining at rest on top of the post as if nothing happened. Excellent for use in physics demonstrations!
An unconventional ball-tossing, head-catching challenge for 2 players or teams!
The Duncan Phoenix Diabolo features a stable, hard rubber shell that retains its shape.
The Star-Ball Magnetic Puzzle is the perfect creativity tool for innovators, artists, writers, students, and you!
This kit will get your paper plane ready for takeoff!
This genuine meteorite is great for the rock collector in your family!
This toy combines the wonders of Sea Monkeys and glow-in-the-dark fun, all in one!