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    American Chemical Society
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    In this activity on page 10 of the PDF, learners develop an experiment to answer the following question: "How much water can the hydrogel in a baby diaper hold?" Use this activity to...

    $1 - $5 per student Ages 8 - 18 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    In this art meets chemistry activity, early learners discover the almost magical absorbent properties of salt while creating ethereal watercolor paintings. Learners first use watercolor to paint an...

    $5 - $10 per group Ages 4 - 6 10 to 30 minutes
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    Science Friday
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    In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses. Learners explore this phenomenon by making a cool pair of...

    $5 - $10 per student Ages 8 - 14 10 to 30 minutes
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    NOAA
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    In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs. Use this activity to begin discussions on...

    1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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    California Academy of Sciences
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    In this activity, learners will review the functions of basic digestive organs, understand how diet affects digestion, understand how digestive tracks may differ, and then step outside to compare...

    free Ages 8 - 18 30 to 45 minutes
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    Kohl Children's Museum
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    In this activity, learners investigate how different materials repel or absorb water. Learners use spray bottles to explore how everyday items like sponges, cardboard, feathers, etc. respond to...

    $1 - $5 per group Ages 4 - 8 30 to 45 minutes
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    PBS
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    In this math lesson, learners compare products to determine the best product. Learners participate in a role playing activity where they assume the role of business executives who must decide which...

    $5 - $10 per group Ages 8 - 11 45 to 60 minutes
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    Chymist.com
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    This activity guide includes instructions for building a spectroscope using a standard classroom overhead projector. Learners can participate in the construction of the device or simply use it to...

    Over $20 per group Ages 11 - 18 45 to 60 minutes
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    4-H
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    In this sunny day experiment, learners measure and compare how quickly light and dark colored materials absorb heat. An extension included in this activity guide suggests learners next design and...

    $5 - $10 per group Ages 8 - 14 10 to 30 minutes
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    NOAA
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    In this game, learners walk through an imaginary Carbon Cycle and explore the ways in which carbon is stored in reservoirs and the processes that transport the carbon atom from one location to...

    free Ages 11 - 18 45 to 60 minutes

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