Thames & Kosmos Kids First STEM Experiment Kit, Intro to Gears, Ages 3+, Medium, Plastic, Model 567018, ClearThe Thames & Kosmos Kids First Mechanical Engineering Kit is an engaging educational toy designed for young learners aged three and up. This kit introduces the fundamental concepts of gears and mechanical engineering through hands on building activities. With 61 durable and reusable plastic pieces, children can construct four different geared machines while developing essential skills. The easy to handle components ensure that little hands can safely