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    TERC
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    In this activity, learners use sand and ice cubes to create a model of permafrost and the effects of the ice melting through the surface. Permafrost is an underground layer of soil, rock and water...

    $1 - $5 per group Ages 8 - 18 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    Learners place their hands on different metals and use an ammeter to monitor the flow of electricity from one metal to another. They become part of a complete circuit, allowing electrons to flow...

    $10 - $20 per group Ages 8 - 18 5 to 10 minutes
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    Children's Museum Of Houston
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    In this activity, learners conduct a controlled experiment to examine how many Mentos are needed to make the tallest possible soda geyser. Will the greatest number of Mentos yield the tallest soda...

    Over $20 per group Ages 8 - 18 1 to 2 hours
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    APSnet
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    In this laboratory activity, learners use a simple procedure to bait oomycetes from water and/ or soil and then examine these fungus-like organisms with the microscope to see how they look. They...

    $1 - $5 per group Ages 11 - 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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    Oregon Museum of Science and Industry
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    In this activity, learners will design a way to identify a powder found at a crime scene by comparing it with known powders, with the goal of solving a crime. Learners will describe the various...

    $10 - $20 per group Ages 8 - 11 45 to 60 minutes
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    University of Nebraska State Museum
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    In this activity (on pages 24-34), learners explore the four-part stomach of cows (and other grazing animals called ruminants), and compare it to the human one-part stomach and its digestive...

    $5 - $10 per group Ages 8 - 14 1 to 7 days
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    Children's Museum Of Houston
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    In this activity, learners conduct a controlled experiment to examine how temperature will affect the height of a soda geyser. Learners compare the soda geyser height of cold, room temperature, and...

    Over $20 per group Ages 8 - 18 1 to 2 hours
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    Lawrence Hall of Science
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    In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter. Then...

    $10 - $20 per group Ages 8 - 18 45 to 60 minutes
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    Bryn Mawr College
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    In this laboratory activity, learners design an experiment to evaluate how environmental factors influence the growth of molds. Suggested questions to investigate include: (1) Does mold grow faster...

    $5 - $10 per group Ages 11 - 18 1 to 7 days

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