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    National Geographic Society
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    In this activity, learners experiment with gear motion to understand how gears work to change the amount of force, speed, or direction of motion in machines. Learners discover that gears allow for...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this health and fitness activity, learners focus on the importance of daily physical activity, specifically walking. Learners use a simple method to measure their stride lengths and then...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this health activity, learners explore breathing, lungs and asthma. Learners test their lung capacity by blowing air into balloons. Learners are also encouraged to determine how the amount of...

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes
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    NSBRI
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    In this activity (on page 1 of the PDF), learners make a "mini-globe" to investigate the causes of day and night on our planet. This is an introductory activity in a guide related to the...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    NSBRI
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    In this activity about how the body regulates blood pressure (page 117 of the PDF), learners make and compare measurements of heart rate and blood pressure from three body positions: sitting,...

    1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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    American Museum of Natural History
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    In this experiment, pairs of learners explore how cold water affects circulation. The mammalian diving reflex (MDR) slows circulation when the body is exposed to cold water. Learners measure their...

    free Ages 8 - 18 30 to 45 minutes
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    Twin Cities Public Television
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    In this activity (page 2 of PDF under GPS: Kinetic Sculpture Challenge Activity), learners will predict which objects have to overcome the most static friction to slide down a ramp. Learners then...

    free Ages 8 - 14 30 to 45 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners build and investigate pendulums of different lengths. They discover that the longer the string of the pendulum, the longer the time it takes to swing. Learners also discover that changing...

    $1 - $5 per group Ages 11 - 18 30 to 45 minutes
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    NOAA
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    In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs. Use this activity to begin discussions on...

    1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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    The Exploratorium
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    In this activity, learners make a simple spring-like scale using a rubber band instead of a spring, and calibrate the scale in newtons (N). Learners will gain an understanding of and familiarity...

    $1 - $5 per student Ages 11 - 18 30 to 45 minutes

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