Amazon.com: Thames & Kosmos Magnetic Science | 33 STEM Experiments | Ages 8+ | Learn About Earth's Magnetic Poles | Discover How Invisible Magnetic Fields Work | Full-Color 48-Page Manual
Amazon.com: Thames & Kosmos Orbiting Solar System STEM Kit | Build a Rotating Solar System Model | Planets Revolve Using a Windup Motor | Explore Gear Ratios | Science Fairs | Difficulty
Amazon.com: Thames & Kosmos Wind Power V4.0 STEM Experiment Kit | Build a 3ft Wind Turbine to Generate Electricity | Learn About Renewable Energy & Power a Small Model Car | Weatherproof