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    NASA
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    In this activity (on page 134 of the PDF), learners explore reaction time. Learners will discover that reaction time can vary even for the same individual and that a disruption in an individual&...

    1 cent - $1 per group Ages 8 - 18 1 to 2 hours
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    University of Washington
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    In this activity (1st on the page), learners keep a "SLOG" or Sleep Log to study their sleep patterns. Learners keep track of their sleep behavior and the dreams that they have each night...

    1 cent - $1 per student Ages 8 - 18 1 to 7 days
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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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    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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    Lawrence Hall of Science
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    In this outdoor winter activity, learners search for and create hibernation sites that will protect gelatin "animals" from freezing. Learners come to understand that hibernating animals...

    $1 - $5 per group Ages 6 - 14 45 to 60 minutes
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    NSBRI
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    This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel. Learners will discover how the light/dark cycle is dictated by the rotation of...

    free Ages 8 - 18 45 to 60 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 sleep rhythms (on page 21 of the PDF), learners will collect data about their own sleep cycles and use a fraction wheel to examine their data. This lesson guide includes...

    1 cent - $1 per student Ages 8 - 14 1 to 7 days
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    NSBRI
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    In this activity about sleep rhythms (on page 25 of the PDF), learners will investigate how changing the time they go to bed impacts their own sleep patterns. For one night, learners will go to bed...

    free Ages 8 - 14 1 to 7 days