A great hands-on lab for physical science. This set of hardwood blocks is precision-cut in the shape of a catenary arch. It needs no support because it is the ideal shape to hold its own weight. The forces acting on the arch cause it to take the..

Simply fill with air by running, tie off the ends, and let the solar energy of the sun heat the air inside the bag. Within about five minutes, the bag (which must be tethered with string) will rise into the sky. Absolutely amazing to see, it teaches man..

Low-cost solar motor operates 1/2V to 3V. Low torque - high rpm. 200 ma start up. Runs at 80 ma no load. Shaft: 2 mm dia. x 1-1/2" long. 3" lead wires with ring connectors.

A great desktop item and attention-getter! Four powerful solar cells (included) are mounted on a revolving disk and motor which is mounted to a plastic stand and base. Watch as the entire disk begins to whirl around when placed in the sun. 4" di..

Study the free fall and projectile motion of objects. When the spring activated trigger is released, one ball falls down and the other is fired like a projectile. But both hit the ground at the same time. Comes complete with two balls (3/4" dia.) an..

Unlock the secrets of bridge building and inspire inner creativity with this development from the world’s leading construction experts. The simple design allows children to quickly come to terms with making the most recognizable and world famous b..

Unlock the secrets of bridge building and inspire inner creativity with this development from the world’s leading construction experts. The simple design allows children to quickly come to terms with making the most recognizable and world famous b..

Mini Panels use solar cells similar to those that power our satellites in space, yet they are safe and simple to use. These mini panels allow for handling without the normal breakage and cell damage associated with solar cells. Best for motors. 6" w..

These teacher-created, classroom-ready charts cover a wide range of science concepts. Activities are included on every chart back. Set of five charts includes States of Matter, Laws of Motion, Simple Machines, Magnets, and Electrical Circuits. E..

Grades 3-8

• Build and control K’NEX® models using the K’NEX® Computer Control Interface, while learning and applying STEM concepts
• The K’NEX® Computer Control Interface acts as a t..