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    Oregon Museum of Science and Industry
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    Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel. They detect the electricity the battery makes by listening to it on a...

    $1 - $5 per group Ages 8 - 14 5 to 10 minutes
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    Colorado State University
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    In this demonstration, learners can observe a number of small convection cells generated from a mixture of aluminum powder and silicon oil on a hot plate. This demonstration helps learners...

    $5 - $10 per student Ages 8 - 14 5 to 10 minutes