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    Institute of Physics
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    In this physics demonstration, learners will be surprised when a handkerchief holds water in an upside-down glass. They will be especially shocked when you hold the glass over their head and...

    free Ages 4 - adult Under 5 minutes
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    The Exploratorium
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    Make a big canvas of iridescent color with pvc pipe! In this Exploratorium Science Snack, you'll need to cut and assemble some PVC pipe, but the pay-off, the soap-bubble canvas, is big....

    1 cent - $1 per student Ages 6 - 18 5 to 10 minutes
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    Twin Cities Public Television
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    In this activity about molecular diffusion (located on page 2 of the PDF), learners will make predictions and move molecules of iodine through a seemingly solid plastic sandwich bag. The process of...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    TERC
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    Using toothpicks, straws, or tubes of rolled up newspaper, learners create 3-dimensional models to illustrate the basic structure and function of the cell membrane, and place an object inside to...

    $1 - $5 per group Ages 8 - 18 45 to 60 minutes
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    University of Utah
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    In this activity, use standard playing cards to introduce learners to cellular interactions such as cell to cell recognition and signal and receptor specificity. Learners will discuss trans...

    $1 - $5 per group Ages 11 - 18 10 to 30 minutes
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    Twin Cities Public Television
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    This is an activity (located on page 3 of the PDF) about diffusion of small molecules across cell membranes. Learners will use gelatin to represent a cell and dye to represent molecules to model...

    $10 - $20 per group Ages 8 - 14 1 to 7 days
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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
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    The Exploratorium
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    By making models of light waves with paper, learners can understand why different colors appear in bubbles. Since light has different sizes, you'll see why certain iridescent colors appear in...

    1 cent - $1 per student Ages 11 - 18 10 to 30 minutes