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STEM: DIY Solar Climbing Vehicle Subclass_Selling to the Progressive Era's trust-bustersThis is a four wheel drive DIY climbing car, through the student hands on assembly practice learning, can help children learn the mechanical transmission structure of the vehicle model. Learn how electricity and solar energy can be converted into mechanical energy, so that children learn from an early age that solar energy is a clean new energy. Learn how to change the vehicle's chassis height to increase the height above obstacles. Learn how to