Thames & Kosmos

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...

It's time to get medieval on physics! Build ten sleek and updated models of catapults and crossbows. These classic siege weapons from the middle ag...

Gecko Run takes classic marble runs to the next level with new creative challenges and less restrictive building requirements. This innovative marb...

Gecko Run takes classic marble runs to the next level with new creative challenges and less restrictive building requirements. This innovative marb...

Gecko Run takes classic marble runs to the next level with new creative challenges and less restrictive building requirements. This innovative marb...

Move over boring marble runs, there's a new kit in town! Witness physics in action with this innovative, flexible system of tracks. Thanks to nano ...

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

Gecko Run takes classic marble runs to the next level with new creative challenges and less restrictive building requirements. This innovative marb...

If your tween or teen has a fascination with all things steampunk - or trains in general - then this kit is for them! Young engineers put on their ...

Finally, an adorable robot! When kids assemble the 172 pieces, they won't realize they're learning about gears, motors, and sound sensors. They wil...

The power of wind makes them go - and you'll have fun building 6 awesome bots that move without any batteries at all. Easy, snap-together assembly ...