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    Lunar and Planetary Institute
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    In this activity, dry ice and other items are used to construct a demonstration model of a comet that illustrates the comet nucleus, coma, and tails. This activity introduces learners to the...

    $10 - $20 per group Ages 8 - 14 30 to 45 minutes
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    The Exploratorium
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    In this activity, learners construct a cereal chain as a model of how proteins are made in the cell. Learners build their chain off of an initial template which represents a single copy of DNA and...

    1 cent - $1 per student Ages 11 - 18 10 to 30 minutes
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    BioEd
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    In this activity related to microbes, learners make slides of cells from an onion skin and Elodea (American or Canadian waterweed) to observe under a microscope. With these examples, learners will...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Mount Holyoke College
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    In this activity, learners build models of atoms and molecules, then consider their role in different phases of matter, density, and mixtures and solutions. The atomic models are made first from...

    $1 - $5 per student Ages 8 - 14 30 to 45 minutes
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    BioEd
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    This neuroscience activity introduces learners to how messages are sent and received by neurons. Learners use modeling clay and pipe cleaners to build model neurons. This lesson guide includes...

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    American Society for Microbiology
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    Working in small groups, learners receive a written scenario regarding a bacterium with a certain goal it must carry out. They must work together to decide what cell parts are needed to form the...

    1 cent - $1 per group Ages 14 - 18 30 to 45 minutes
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    The Exploratorium
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    In this activity, learners make a black box device that serves as an excellent analogy to Rutherford's famous experiment in which he deduced the existence of the atomic nucleus. Learners roll...

    $1 - $5 per group Ages 14 - 18 30 to 45 minutes
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    Oregon Museum of Science and Industry
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    Learners use a simple process to extract DNA from strawberries. After mashing a strawberry in a plastic bag, they add soap solution (to break open the cell and nuclear membranes), meat tenderizer ...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes