$25 to $50

Going up! Build an adorable robotic gecko that defies gravity to crawl up, down, and all around smooth vertical surfaces! As you assemble this moto...

Read the fun story of two young engineers, Ty and Karlie Omega, and build simple models of the aircraft they discover on their hilarious family vac...

Intro to Engineering welcomes children to the field of engineering with 21 experiments and building projects in five sections. By engaging in hands...

An easy-to-read storybook and 53 different parts let preschoolers build 10 robots, while developing simple engineering skills. Follow the funny adv...

Welcome to the fascinating world of mechanical engineering! Make 8 motorized robots that move in different ways while exploring how each one uses g...

Build a series of adorable, motorized robotic animals with this introductory mechanical engineering kit for kids ages five and up. A beautifully il...

Welcome to the fascinating world of mechanical engineering! Make 8 robotic animal characters including: a unicorn, sea otter, fox, bear, baby llama...

The impact of mechanical engineering is all around us. This broad, dynamic field encompasses the design, development, and testing of basically anyt...

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...

Future engineers enjoy the focused work of this 180-piece cyber hand build that teaches them about mechanical assembly and hydraulics. Once built, ...

Get future engineers on track for STEM learning with this model train set of the future! They'll enjoy the focused work of building this 186-piece ...

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

What's cooler than building a bot? Building 8 of 'em! A 48-page, full-color book guides the assembly, and a compact solar panel gives them power. T...

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...