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    Lunar and Planetary Institute
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    In this activity, learners model the gravitational fields of planets on a flexible surface. Learners place and move balls of different sizes and densities on a plastic sheet to develop a mental...

    $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, learners work in teams to construct human lung models from small plastic beverage bottles and balloons. Learners use the models to investigate how movements of the diaphragm cause...

    1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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    Centers for Ocean Sciences Education Excellence
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    In this activity, learners are challenged to design a planktonic organism that will neither float like a cork nor sink like a stone. They are given pictures of planktonic organisms and simple...

    $5 - $10 per group Ages 8 - adult 30 to 45 minutes

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