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Patrons build a gravity-powered machine that automatically sorts two different sizes of beads into separate plastic cups. 0
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No windows? No problem. Design a light tube to bring as much light as possible into a dark room. 0
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Patrons build a roof for a birdhouse that will stay cool in the summer. 0
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Participants design bottles that can float, sink, or remain suspended to hold simulated sensors that would monitor the health of a river. 0
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Patrons can record earthquake activity in the library or their homes by designing their own seismograph. 0
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Machines help us get work done; some are complex, with lots of moving parts, and others are simple. Cams are one example of a simple machine. They are like gears, but have no teeth and come in lots of different shapes. We use them to convert rotating motion (such as turning a crank) into back and forth motion (such as waving an arm). 0
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