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    American Chemical Society
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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. Learners construct an electrolyte...

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    American Chemical Society
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    In this activity on page 7 of the PDF, learners make their own water treatment systems for cleaning water. Learners construct two filters to test: one with sand and one with sand and charcoal....

    $5 - $10 per student Ages 8 - 14 45 to 60 minutes
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    WGBH
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    In this activity, learners mix milk, vinegar, baking soda, and water to create sticky glue. Use this activity to explain how engineers develop and evaluate new materials and products. Learners...

    $1 - $5 per student Ages 6 - 11 45 to 60 minutes
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    WGBH
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    In this activity, learners calculate their water usage (in cups and galloons) during an average shower. Learners also chart and analyze water usage during showers in their households. Use this...

    free Ages 6 - 11 45 to 60 minutes
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    Twin Cities Public Television
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    In this physical sciences activity, learners explore friction. Learners investigate the factors that affect the force required to move an object. Learners prepare weighted shoeboxes and then...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes

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