This long metal coil spring is ideal for visually demonstrating wave properties, such as frequency, wavelength, and interference, in the classroom. Can be used in a variety of experiments, and provides a hands-on teaching tool that students always seem to enjoy. Extends to thirty feet in length, measures about 6.5" fully coiled. Also makes a great gift for anyone who was or is a fan of the smaller toy version we all know from our childhoods.
See the constellations visible in the Northern Hemisphere on this watch!
Discover how solar cells make electricity with this awesome kit!
Build a model car that runs on hydrogen gas using a unique reversible fuel cell!
The large realistic model has removable organs that can be studied and set back into the correct position.
The Ball of Whacks is the perfect creativity tool for innovators, artists, engineers, writers, students, and you!
This kit allows to build up to 3 different robots!