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.
Create currents and discover gravity while exploring the theory of Lenz's Law with this kit!
Build over 90 sound-based electronics projects with Snap Circuits' easy to follow instructions!
The ultimate Engino building set, with 100 different model project possibilities and two included motors!
This glass Erlenmeyer mug makes an excellent gift!
Mystify your friends as your UFO hovers and seems to defy gravity!
Build six solar-powered models with this fun kit!