Intermediate Engineers

Intermediate Engineers are the next step up. These builds take longer and use mechanisms that need careful placement: gears that mesh, belts that carry drive, linkages that turn motors into walking legs, and wiring for batteries and switches. Kids get the most out of these once they have finished a simpler build or two. A small mistake shows up in how the model moves, and fixing it is part of the learning. They suit classroom projects and kids at home ready for a bigger challenge. Each product page lists what is in the box and what you need to supply.