Stemwurks

Description: Thames & Kosmos 545002 Wow in the World: Break-Open Crystal GeodesUnearth your inner geologist as you break open ten real geode specimens to reveal beautiful, sparkling crystals inside...

Description: Thames & Kosmos 548001 Spy Labs: Master Detective ToolkitWelcome to Spy Labs Incorporated, the one-stop shop for spies on the top! With this well-equipped toolkit, you can learn how...

Description: Thames & Kosmos 550014 Ultralight AirplanesConstruct awesome flying gliders with ultralight plastic and bamboo parts. Build five different types of planes with different wing...

Description: Thames & Kosmos 550030 Solar-Powered RoversThe sun's energy can be used to do some pretty astonishing things! Get ready to explore the amazing capabilities of solar energy by building...

Description: Thames & Kosmos 550037 Orbiting Solar SystemSet 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...

Description: Thames & Kosmos 550038 SpringBots: 3-in-1 Spring-Powered Machines Build a motorized robot, race car, and countdown timer, all that run without any batteries or electrical power! The...

Description: Thames & Kosmos 550041 Easy Electric CircuitsExplore the science of electricity in a fun, hands-on way by building 20 electric circuits and motorized devices. Conduct experiments to...

Description: Thames & Kosmos 550047 WindBots: 6-in-1 Wind-Powered Machine Kit Build six awesome bots that move without any batteries or electricity. The secret behind these fascinating machines is...

Description: Thames & Kosmos 550201 Gecko Run: Marble Run Starter Set Gecko Run takes classic marble runs to the next level with new creative challenges and less restrictive building requirements...

Description: Thames & Kosmos 550206 Gecko Run: Marble Run Deluxe Starter Set Gecko Run takes classic marble runs to the next level with new creative challenges and less restrictive building...