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Build five out-of-this-world robots that are powered by the sun — batteries not required! First assemble the main robot, Helio, complete with solar...

Explore the fascinating science of crystal growing in the palm of your hand! This gift set holds a 16-unit assortment of individual crystal-growing...

Set the planets in motion with a flick of your wrist! Build a mechanical model of the solar system including the sun and eight planets (also known ...

Grab this briefcase full of investigator's tools and get ready to track down some crooks! Learn about how detectives use forensic science to answer...