Thames & Kosmos

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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...

Unleash your inner magician with the Magic Hat Edition! With 35 easy-to-follow feats, this set comes with over 40 props and a secret-filled manual....

Set the planets in motion with a flick of your wrist! Build a mechanical model of the solar system including the sun and eight planets (also known ...

Turn your bedroom into your very own planetarium theater! Illuminate a darkened room by casting projections of the stars in the night sky and space...

Super sweet stunts! Build your own gumball machines and learn physics lessons in the process. A turn of a handle dispenses one gumball at a time ou...

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...

Look close with this kid-focused introductory microscope that magnifies objects up to 600 times! Check out pond water, plant leaves, hair, onions, ...

Unleash your inner cyborg with the Mega Cyborg Hydro Blaster! This buildable, handheld water blaster and claw allows you to explore the world of hy...

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 ...

Bring snow inside... any time of year, no matter where you live! Kids enjoy the magic of cool snow-based experiments and learn about weather along ...

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...

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

Oh no, you silly dodo, don't push your egg down the mountain! This fun, fast cooperative game challenges players to race against gravity. Work toge...

If you're raising a future Sherlock Holmes, your young detective needs all the tools of the trade. Help them crack the case on any mystery with thi...

Wow future geologists and rock-loving kiddos with a crystal-filled kit! Curious STEM learners customize the included iridescent display case by dec...

Indulge in the tastiest game of pinball with Pinball Machine Maker: Gumball Rally! Assemble your machine, place the obstacles, then aim and shoot e...

Unlock microscopic wonders with the Thames & Kosmos Microscope! View prepared slides or prepare your own with the 45-piece accessory set. Use t...

Experience the future of transportation with RoboRails! This compact robot uses a fast-moving internal gyroscope and clever ball-bearing weights to...

Stay connected with your fellow secret agents with Spy Labs: Spy Walkie-Talkies. With a range of up to 1.5 mi/3 km unobstructed and 0.5 mi/1 km wit...

Unleash your inner detective with Spy Labs' Forensic Investigation Kit. Uncover hidden secrets with UV light, fingerprint powder, pH test strips, a...

  Be a dragon master as you protect these winged creatures before they can unleash their fiery potential! With the help of the "magic book", choose...

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

Magicians in training will delight in performing 150 gasp-worthy tricks, from crying coins to bending metal to levitating water. They'll get lots o...