Science

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...

Build a sleek, modern (and adorable!) walking robot powered by salt water and magnesium — no batteries required! Discover how a metal-air electroch...

Build a lightning-fast race car powered by nothing but air — no batteries or electric motor required! Use the sleek, integrated pump to compress ai...

Explore hydraulics, mechanics, and robotics with a buildable, handheld water blaster and claw! Using over 180 plastic pieces, assemble this awesome...

Looking for a fun and educational activity about solar power? This sleek, compact race car harnesses the energy from the sun to power an electric m...

Build unique robots that are powered by the sun — batteries not required! Using a compact solar panel, these cool little bots harness energy from t...

Hey solar superstars! Want to build fun, solar-powered vehicles and devices that move using electricity generated directly from sunlight? With this...