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    American Chemical Society
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    In this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon. Learners discover that the extracts' motion is similar to the way that oxygen...

    $5 - $10 per student Ages 8 - 14 10 to 30 minutes
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    NSBRI
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    In this activity about the human heart (on page 5 of the PDF), learners work in teams to simulate the volume of blood moved through the circulatory system by transferring liquid into--and through-...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    NSBRI
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    In this activity about the heart (on page 22 of the PDF), learners examine sheep or chicken hearts to learn about the heart's structure and the flow of blood through the heart. Learners will...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes
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    NSBRI
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    In this activity about heart health (on page 34 of the PDF), learners measure their own blood pressure using an electronic blood pressure monitor with a self-inflating cuff (included in cost of...

    Over $20 per group Ages 8 - 14 1 to 2 hours