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    BioEd
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    In this activity related to microbes, learners create scale models of microorganisms and compare relative sizes of common bacteria, viruses, fungi and protozoa using metric measures: meters,...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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    National Optical Astronomy Observatory
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    This is a classic exercise for visualizing the scale of the Solar System. Both the relative size and spacing of the planets are demonstrated in this outdoor exercise, using a mere peppercorn to...

    1 cent - $1 per group Ages 6 - adult 45 to 60 minutes
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    BioEd
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    This activity helps learners visualize the Human Immunodeficiency Virus (HIV) by constructing three-dimensional HIV particle models from paper. The model to be used is a 20-sided polyhedron ...

    1 cent - $1 per student Ages 8 - 18 1 to 2 hours
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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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    Oregon Museum of Science and Industry
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    Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly. They make simple wings out of paper, mount them on rods connected to a base, and test how much lift...

    1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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    New York Hall of Science
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    This activity lets you program your 'robot' (a willing friend) to pick up and dispose of some 'toxic waste' using as few commands as possible. Learners create command cards ...

    1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into mapping the underground “plumbing” of geysers. Groups of learners will mimic an actual investigation into the...

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours

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