Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!
An ancient toy featuring optical illusion and hands-on fun that never grows old!
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
Defy gravity with this cool balancing eagle!
Create currents and discover gravity while exploring the theory of Lenz's Law with this kit!
An unconventional ball-tossing, head-catching challenge for 2 players or teams!