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    NSBRI
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    In this activity (on page 146 of the PDF), learners will explore the effects of increased carbon dioxide in the bloodstream. This activity can be enhanced by sharing the "Astronaut's...

    1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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    Twin Cities Public Television
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    In this activity, learners compare ways to measure their heart rates. Learners build their own stethoscopes and learn how exercise affects heart rate.

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    American Association for the Advancement of Science
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    In this online activity, learners measure their pulse rates and investigate how their pulses change when they engage in different activities. Learners record their pulse rates at rest, after...

    free Ages 8 - 11 10 to 30 minutes
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    BioEd
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    In this environmental health activity, learners investigate their breathing and pulse rates, and learn how these measurements are affected by physical activity. There are three parts to this...

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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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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    Oregon Museum of Science and Industry
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    In this activity, learners perform a simulated blood test procedure. They perform control reactions and test reactions, then use their observations to determine the blood type of different "...

    $1 - $5 per group Ages 11 - adult 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    Learners mix a solution containing luminol and copper with a fake blood solution. A chemical reaction between the luminol solution and fake blood (hydrogen peroxide) show learners a blue glow....

    $1 - $5 per group Ages 11 - adult 5 to 10 minutes
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    Bill Nye
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    In this activity, learners use plastic tubing and a funnel to listen to their heart. Learners also discover that if they run around, their heart pumps harder and faster, making it easier to hear....

    $1 - $5 per student Ages 4 - 14 5 to 10 minutes
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    The Exploratorium
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    In this quick optics activity, learners use a dim point of light (a disassembled Mini MagLite and dowel set-up) to cast a shadow of the blood supply in their retina onto the retina itself. This...

    $1 - $5 per student Ages 8 - 14 Under 5 minutes
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    NSBRI
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    In this activity about heart health (on page 27 of the PDF), learners measure their heart rates after a variety of physical activities and compare the results with their resting heart rates, and...

    free Ages 8 - 14 1 to 2 hours

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