Easily construct this build-it-yourself army helicopter powered by the sun! The Greenex: Solar Chopper Science Kit will help you learn about solar energy and solar panels through hands-on applications!
With Greenex: Robotic Run Science Kit Keep your car running using the power of the sun or even your own movement. This rear wheel drive car can be set up to run using solar power or if there's no light use the hand generator and have control over the back
Greenex: Solar & Salt Water 3-In-1 Go Science Kit connects kids to the Environment! With this transforming robot car your kids can have a blast building and playing with their solar and salt water powered creation!