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    Science Museum of Minnesota
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    In this activity, learners will measure their lung capacity by making their own spirometer. Learners will then explore factors that affect the amount of air the lungs can hold. Useful information...

    $1 - $5 per group Ages 8 - 18 45 to 60 minutes
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    NASA
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    In this activity about the brain and sleep (on page 138 of the PDF), learners measure their resting breathing rates. Learners will discover that breathing frequencies vary amongst individuals. This...

    1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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    NOAA
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    In this quick and easy activity and/or demonstration, learners use two empty 2-liter bottles and hot tap water to illustrate the effect of heat on pressure. Learners will be surprised to see what...

    free Ages 6 - 18 5 to 10 minutes
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    NASA
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    In this activity (on page 142 of the PDF), learners will compare breathing rates before and after hyperventilation to explore how reduced carbon dioxide levels in the blood lower the need to...

    1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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    Science Museum of Minnesota
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    By building a model of a lung and diaphragm, learners discover the function of various parts of the body's respiratory system. The model uses common items - a plastic bottle, a balloon, and a...

    1 cent - $1 per student Ages 8 - 18 45 to 60 minutes