$25 to $50

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

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

Build a mesmerizing, decorative lamp that changes colors and mimics the undulating movements of a jellyfish in the water.     Lock different compon...

Start your engineer on their road to discovery with Rivet-Rex 12! Introduce them to challenging build plans, troubleshooting and problem solving an...

Peer around corners, into tight spaces, and even under water with the only flexible digital spy scope designed especially for aspiring young spies ...

Build a lightning-fast race car powered by nothing but air — no batteries or electric motor required! Use the sleek, integrated pump to compress ai...

Ever dreamed of having a vending machine in your room? With this engineering kit, you can build and experiment with your own toy vending machine. F...

Think of this as an analogue robot. Wood and string combine to make a precision grabbing device. The builder controls the bot with levers and str...

Electric motors and generators are in countless devices, appliances, and vehicles we use every day. With this kit, you can conduct 25 experiments t...

Explore the science of electricity in a fun, hands-on way by building 20 electric circuits and motorized devices. Conduct experiments to learn abou...

The intelligent remote control robot has multiple modes that can talk and listen, can move forward/backward and left/right, can change your voice a...

Intro to Engineering welcomes young children to the field of engineering with 25 experiments and building projects in five sections. By engaging in...

Read the fun story of two young engineers, Ty and Karlie Omega, and build simple models of the vehicles they encounter on their comical trip to the...

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...

Build six different air-and-water powered models Harness the power of air and water to make things move! Build water-rocket cars, jet-propelled boa...

An apple that defies gravity and walks a tightrope — what would Isaac Newton have thought? Build a cute apple robot that walks along a tightrope. H...

SpyX DIY Kit - Make Your Own Spy Device!  A cool scientific toy that you can build your own spy listening device. You will be surprised that how cl...

SpyX DIY Kit - Make Your Own Spy Device!  A cool scientific toy that guides you to build your own spy motion detector device that really works! Con...

SpyX DIY Kit - Make Your Own Spy Device! Connect the circuits and build your own real working spy gadget.  Learn the science behind SpyX Surveillan...