Thames & Kosmos Orbiting Solar System STEM Kit
🌟Thames & Kosmos Orbiting Solar System 泰晤士河和宇宙軌道太陽系
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Build a colorful, mechanical, rotating model of our solar system! The model uses a windup motor to set the planets in motion--no batteries required.
Thames & Kosmos Orbiting Solar System STEM Kit | Build a Rotating Solar System Model | Planets Revolve Using a Windup Motor | Explore Gear Ratios
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Set 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 known as
Thames & Kosmos Orbiting Solar System Kit