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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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    American Chemical Society
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    In this activity on page 4 of the PDF, explore the unique molecular structure and conductive nature of graphene. Learners construct a circuit with a battery and LED bulb. Then, they examine what...

    $10 - $20 per student Ages 8 - 14 5 to 10 minutes
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    National Optical Astronomy Observatory
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    In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database. This popular program has generated 100,000...

    free Ages 4 - adult 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light. Examine how the more UV rays there are, the...

    $5 - $10 per student Ages 6 - 14 10 to 30 minutes
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    PhET
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    In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping. Learners can even slow time and transport...

    free Ages 8 - adult 10 to 30 minutes
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    PhET
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    In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate. Learners will also...

    free Ages 8 - adult 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 15 of the PDF, discover how materials and physical forces behave differently at the nanoscale. Learners experiment with water to see how the effects of surface tension...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes