Save with this pack of 10 buzzers. 1.5 Volts DC 400Hz. Great for Morse code circuits.
Works on 1.5 V DC (any AA, AA, C or D battery will do.)
Create your own circuits or test batteries and solar cells with this buzzer. Connect it to a battery and a key switch to make your own Morse code circuit.
Learn all about the science of light, optics and visual perception with this wonderful kit!
Learn Chemistry While Creating Sweet Treats
This hanging Galileo thermometer is a gorgeous way to display the temperature outdoors!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Create currents and discover gravity while exploring the theory of Lenz's Law with this kit!
A perpetual motion model of the galaxy, makes a good desk toy.