A length of durable, non-stretch cotton measuring 82 feet (25 meters) long at 1/16 of an inch thick. The string is specially designed for use with any of our pulleys, allowing you to perform experiments demonstrating basic laws of motion and simple machines. Perfect for the physics classroom, and great for use with a variety of science fair experiments.
The large realistic model has removable organs that can be studied and set back into the correct position.
A touch of joy. A touch of science. Light responds to your touch and to the music in your room!
This mirascope creates a 3D hologram image!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
Use this cool Sea Monkeys zooquarium to teach your child how to take care of a pet!
Make the coolest 3D pin art on your desk with this amazing desk toy.