Construct five cool functional models and learn the fundamental physics of gears.
This 114-piece engineering set contains the materials to create five awesome moving models. Build a cool helicopter with spinning rubber-band powered blades, or assemble a spinner toy that you wind up to launch a fast-spinning top. Learn about the gear-based physics behind the air-craft launcher, hand mixer model and centripetal force machine, using the 28-page manual with illustrated instructions to guide you. Great fun for any budding engineer.