STEM

How many ways can you design a gumball machine? There's no limit here! Place the pieces in different configurations–turn the handle and see if your...

Build your own mechanical hand, slip it on like a glove, and get a grip, without motors or electricity. It uses hydraulic power to simulate the mov...

Turn rough rocks into polished gems. Our powerful tumbling machine features a strong motor, and includes a leak-proof rubber barrel, a timer, 9 dif...

Jumpstart your study of mechanical physics by learning all about simple machines and how they're used to make complex tasks easier to do. Through 2...

Enjoy gardening at your fingertips with a miniature desktop greenhouse and tiny gardening tools! All you add are soil, water, and your choice of se...

A truly mesmerizing marble-track experience! Each set is made up of hollow stacking cubes and a variety of perfectly flat tracks. The paths cut out...

Stack hollow cubes to magically propel stainless steel marbles down a track for a truly mesmerizing experience! Eighteen special tracks grow wider ...

A truly mesmerizing marble-track experience! Each set is made up of hollow stacking cubes and a variety of perfectly flat tracks. The paths cut out...

Discover how Neil deGrasse Tyson became one of the world’s most successful and well-known scientists in this new addition to the #1 New York Times ...