Save with this pack of 10 buzzers. 9 Volts DC 400Hz. Great for Morse code circuits.
Works on 3 V DC (any 9V 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 how solar cells transform light into electrical energy with this great kit!
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
This classic device is used to demonstrate the conservation of mechanical energy.
The Wimshurst Machine is a high quality static machine for student labs.
Build your own 10 inch kaleidoscope with this great kit!
This classic desk toy will keep you amused!
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