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    American Chemical Society
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    In this activity on page 5 of the PDF (Plants—The Green Machines), learners use chromatography to separate and identify pigments within various leaves. Learners soak leaf pieces in warmed rubbing...

    $1 - $5 per student Ages 8 - 14 1 to 2 hours
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    American Chemical Society
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    In this activity learners compare the bounciness of warm and cold racquetballs to see if temperature makes a difference in how well they bounce. Use this activity to introduce polymers and...

    $1 - $5 per student Ages 8 - 14 10 to 30 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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    American Chemical Society
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    In this activity on page 6 of the PDF (Chemistry—It’s Elemental), learners explore some of the properties of copper using a few common household ingredients. Learners compare four liquids and their...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 11 of the PDF, learners follow simple steps to recycle old newspaper into new paper. Use this activity to introduce conservation as well as the chemistry of cellulose and...

    $1 - $5 per student Ages 6 - 14 1 to 7 days
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    CIENTEC Foundation
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    In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires. Safety note: this activity involves the use of a small candle...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    Twin Cities Public Television
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    In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    WGBH
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    In this activity, learners make a helium balloon "flink"--neither float away nor sink to the ground. Use this activity to introduce physics concepts related to gravity, density, and...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 4 of the PDF (Water in Our World), learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water....

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 10 of the PDF, learners develop an experiment to answer the following question: "How much water can the hydrogel in a baby diaper hold?" Use this activity to...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes

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