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.
Features:
$129
Build a model car that runs on hydrogen gas using a unique reversible fuel cell!
$109
Human Anatomy Model - Large 20 in
The large realistic model has removable organs that can be studied and set back into the correct position.
$34
The Ball of Whacks is the perfect creativity tool for innovators, artists, engineers, writers, students, and you!
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