$25 to $50

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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...

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...

Grab your beakers and test tubes and step up to your special laboratory station for some exciting chemistry experiments. See how much fun chemistry...

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 ...

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 ...

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

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

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...

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...

Make STEM learning fun with SolarBots: Cosmic Explorers! Assemble 5 solar-powered robots with the easy and colorful building system and step-by-ste...

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

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...

If you're raising a future James Bond, your young secret agent needs the high-tech help of a location tracker. Hide the transmitter with a valuable...

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...

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

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...

Marvel at the wonders of the universe with this mesmerizing electric light show. The plasma ball creates a fascinating display of glowing electric ...

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 ...

Construct your air-powered robotic hand that fits like a glove and prepare to blast off! This amazing engineering project uses pressurized air and ...

The wind is one of the most promising sources of clean, renewable energy available today. With this kit, you can assemble a realistic wind turbine...

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 ...

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