15

Make a Rube Goldburg-like contraption to fling objects with abandon. This kit has everything from hydraulics to propellers. Boing! Fling! Wow! 

Do you ever wonder how bridges span huge distances and how skyscrapers stay standing? Structural engineers use physics and their knowledge of the p...

Assemble this cutting-edge robotic arm from almost 300 plastic pieces, learning how each part comes together in its intricate mechanical design. Ju...