Forget the batteries! This safe and reliable power supply is a convenient source of low voltage DC power. Dial easily turns to select the desired voltage and it plugs into a standard electrical outlet. 3V-12V DC, 1.25 amps max.
Working model representing the sun, earth, and moon and their relationships.
A massive mounted set of 100 rocks and minerals found in the US,
See the solar system in action!
The large realistic model has removable organs that can be studied and set back into the correct position.
Build over 60 projects with this deluxe version of the Snap Rover kit!
Learn all about the science of light, optics and visual perception with this wonderful kit!