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    NOAA
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    In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation. Learners compare the melting rate between chocolate left in the sunshine and chocolate...

    1 cent - $1 per group Ages 6 - 14 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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    NISE Network
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    In this activity, learners find out why some mineral sunblock rubs in clear. Learners compare nano and non-nano sunblocks and discover how particle size affects visibility.

    $5 - $10 per group Ages 4 - adult 5 to 10 minutes
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    NASA
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    In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays. Learners use "detectors" (UV beads) at five different stations,...

    $10 - $20 per group Ages 4 - 18 10 to 30 minutes
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    NISE Network
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    This is a hands-on activity exploring how nanoscale particles are used in mineral sunblocks to increase their transparency. Learners compare nano and non-nano sunblocks to a visual representation...

    $10 - $20 per group Ages 6 - adult 10 to 30 minutes
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    University of Utah
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    In this laboratory experiment, learners explore how effectively different sunscreens protect yeast cells from damage caused by ultraviolet (UV) radiation. Learners may compare differing SPFs of the...

    Over $20 per group Ages 8 - adult 1 to 2 hours
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    BioEd
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    In this activity, learners compare and contrast their own skin (including the area covered) with that of an orange. This activity helps learners understand that skin is a vital part of the body and...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    Twin Cities Public Television
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    This is an activity (located on page 3 of the PDF) about nanotechnology making its way into everyday products, such as sunscreen, and how effective these invisible particles may be vs. their old...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours