$25 to $50

Geology rocks! Inside a giant geode are 12 awesome gemstones, from jasper to amethyst. Use the tools to chisel them out, then learn special facts a...

Crime Scene Investigation done just like real detectives with this 66 piece kit, full of tips and explanations behind the forensic techniques. Safe...

Google "orrery" because you'll be building one, winding it up, then watching planets orbit the sun at their own speed! Explore gear mechanics as yo...

How cool is it that the mainspring stores energy, then converts it to motion? Discover the physics of potential and kinetic energy and the inner wo...

A childhood classic gets a new 3D spin with cool LED lights! The animator has a spinner platform that makes every design move in a different way wi...