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Magnetic Spring
Physics
Technologies
Storm in a Jar
Earth and Space Sciences
Physics
Cardboard Train Wheels
Physics
Technologies
Cardboard Cogs
Arts and Design
Technologies
Cam-powered crocodile
Arts and Design
Technologies
Wonderful Windmills
Sustainability
Technologies
Make a Motor
Physics
Science
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Make a Magnet
Physics
Science
Technologies
Rainbow Lightning
Arts and Design
Physics
Science