Learn the basic principle of operation behind an electric bell. Great for science fair projects.
Operates on 3- to 6-V DC battery or 6- to 10-V AC transformer.
The coils and terminals are enclosed under a snap-on metal cover.
Bell is removable for use as a buzzer. Mountable.
This science kit is an essential introduction to physics knowledge!
Use this cool Sea Monkeys zooquarium to teach your child how to take care of a pet!
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.
Build your own windmill generator kit by recycling a plastic bottle!
Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!
Head into the lab for an in-depth investigation of genetics and DNA!
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