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.
Build your own 10 inch kaleidoscope with this great kit!
An unconventional ball-tossing, head-catching challenge for 2 players or teams!
This caffeine molecule mug makes an excellent gift!
This classic desk toy will keep you amused! Large, 7 inch tall version.
The LCD Digital Microscope II is a professional biological microscope at an affordable price. Up to 1600X with digital zoom!
This quality Dobsonian style telescope features a 76 mm aperture reflector optical tube.