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| Science Toys - illustrated, step-by-step guides on how to make a variety of educational science-related toys, including a Bernoulli levitation ball, a classic propellor toy, a geodesic dome, a homemade vacuum pump, kaleidoscope, a mid-air magnet, a quick and simple radio, a simple 1-watt amplifier, simple rocket engine, solar battery, solar powered marshmallow roaster, an electric motor in 10 minutes, homemade ice cream, permanent rainbows and more |
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