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    The Exploratorium
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    Construct a simple battery that's able to power a small light or motor out of foil, salt water, and charcoal. A helpful video, produced by the Exploratorium, guides you along on this activity.

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    American Chemical Society
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    In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult. Although the crushing test will not give conclusive results, it is a...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    New York Hall of Science
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    Don't scream for ice cream -- make it with milk, sugar, flavoring and some 'salt-water' ice. Discover the chemistry of ice cream by creating your own.

    $1 - $5 per student Ages 4 - 11 10 to 30 minutes
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    University of Wisconsin-Madison
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    In this investigation, learners plant seeds in a 2-liter bottle filled with soil that is connected to a water source below. Over the next few weeks, learners observe how the plants grow. The...

    $1 - $5 per student Ages 4 - 14 1 to 4 weeks
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    The Exploratorium
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    Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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    COSI
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    In this chemistry activity (page 1 of the PDF), learners will observe a physical change. By making their own sugar or salt crystals, learners will identify physical changes and see how they can be...

    $1 - $5 per student Ages 6 - 14 1 to 4 weeks
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    The Exploratorium
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    In this online activity, learners experience the thrill of pickle making, and explore how a cucumber becomes a pickle. In this "virtual kitchen," leaners discover that pickling takes...

    free Ages 6 - 14 5 to 10 minutes
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    Centers for Ocean Sciences Education Excellence
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    In this activity, learners explore the concept of density-driven currents (thermohaline circulation) and how these currents are affected by climate change. Learners use colored ice cubes, water,...

    $10 - $20 per group Ages 8 - adult 1 to 2 hours
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    NOAA
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    In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream. Pairs of learners will combine ingredients in a plastic bag and then add...

    $5 - $10 per group Ages 6 - 14 30 to 45 minutes
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    Oregon Museum of Science and Industry
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    In this simple activity (on page 2 of the PDF), learners make a crystal garden using salt, water, and a brick. This is a take-home version of the display Crystal Garden in the Nature of Matter unit...

    $1 - $5 per student Ages 6 - 14 1 to 7 days

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