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    NSBRI
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    In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide. This is...

    $5 - $10 per group Ages 8 - 18 1 to 7 days
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    American Chemical Society
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    In this activity on page 7 of the PDF, learners experiment with the interesting designs that can be made by painting on plaster. Learners discover the chemistry behind fresco, an art technique made...

    $10 - $20 per student Ages 6 - 14 10 to 30 minutes
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    COSI
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    This is a chemistry lab activity about solutions (page 6 of the PDF). Students make a limewater testing solution for carbon dioxide and explore the concepts of solubility and precipitates. The...

    $10 - $20 per group Ages 6 - 14 4 to 24 hours