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In this activity on page 10 of the PDF, learners detect the amount of energy that can flow through a sodium chloride electrolyte solution with a light sensor.

$5 - $10 per student Ages 8 - 14 45 to 60 minutes
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This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners build water-propelled engines from soft drink cans.

$1 - $5 per group Ages 4 - 14 30 to 45 minutes
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In this physics activity (page 10 of the PDF), learners will explore how energy from moving water can be used.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes