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    Carleton College
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    In this activity, learners use Styrofoam to collect organisms from a pond, estuary or marine environment and then examine what they have caught with a microscope. The tiny spaces in Styrofoam...

    $1 - $5 per group Ages 8 - 18 1 to 7 days
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    American Society for Microbiology
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    In this activity, learners prepare samples for microscopic observation from a termite hindgut, a lichen, and a legume root nodule. Learners use microscopes to examine mutually beneficial symbiotic...

    Over $20 per group Ages 11 - 18 1 to 2 hours
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    Berkeley Natural History Museums
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    After an interest-generating discussion about "dirt" and microbes, learners select and collect soil samples from a variety of locations (schoolyard, home, etc.). They make a dilution in...

    $1 - $5 per group Ages 8 - 18 1 to 7 days
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    The Exploratorium
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    In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease. Learners work in groups and use...

    $10 - $20 per group Ages 11 - 18 1 to 2 hours
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    American Association for the Advancement of Science
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    In this version of tag, a large group of learners model how the body fights infection. Learners act as germs, as lymphocytes, and as the body's cells threatened by germs. After playing one...

    $1 - $5 per group Ages 8 - 11 30 to 45 minutes
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    American Society for Microbiology
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    Learners simulate the process of natural selection using a variety of beans and a bowl with a hole cut into it. The variety of beans represents the variation in a population of microbes, and the...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    National Health Museum
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    In this series of exercises, learners predict the conditions necessary for bacterial growth, test their predictions and at the same time practice the aseptic techniques and safety procedures needed...

    $10 - $20 per group Ages 14 - 18 1 to 2 hours