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In this activity related to magnetism and electricity, learners discover that a magnet falls more slowly through a metallic tube than it does through a nonmetallic tube.

$1 - $5 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners make a model of a power plant that uses steam. Learners use simple materials like foil, a tin can, and a pot of water to model a geothermal power plant.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes
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In this activity, learners string a line across the room and build cable cars that can move from on end to the other.

$1 - $5 per student Ages 8 - 18 45 to 60 minutes