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    New York Hall of Science
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    This is an activity about lung capacity. Learners will measure their own lung capacity using a homemade spirometer. A spirometer is an apparatus for measuring the volume of air inspired and expired...

    1 cent - $1 per student Ages 6 - 18 10 to 30 minutes
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    COSI
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    This is a chemistry lab activity about solutions (page 7 of the PDF). Learners see firsthand how chemicals in a solution can combine to form an entirely different substance. They also see physical...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    American Association for the Advancement of Science
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    Learners discover that their breath contains carbon dioxide, one of the pollutants found in car exhaust. They blow bubbles into water, then use an indicator (bromothymol blue) to see that the water...

    1 cent - $1 per group Ages 8 - 11 5 to 10 minutes
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    Community Science Workshop Network
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    In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH. Learners also explore what happens when an acid (lemon) is mixed...

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