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    This activity (located on page 3 of the PDF) is a full inquiry investigation into tree growth rates. Groups of learners will count tree rings to determine each tree’s age. A thorough sample of...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into biodiversity of a given habitat. Groups of learners will work in pairs or small groups and conduct a bioblitz of a...

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    In this activity, learners create a star show and discover how they can prevent light pollution. Using simple materials, learners first design constellation boxes. Next, learners use their...

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    In this quick activity (located on page 2 of the PDF), learners will model how wetlands act as natural filters for the environment. Learners prepare a mixture of water, soil, gravel, and leaves and...

    $5 - $10 per group Ages 8 - 14 10 to 30 minutes
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    This activity (on page 2 of the PDF) is a full inquiry investigation into absorption and reflection of radiant energy. In order to build a house that keeps a dog as cool possible in the heat,...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours
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    In this engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing. Learners are encouraged to brainstorm, build, redesign/rebuild, collect data and...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this technology activity, learners explore digital imaging and pixels. Learners "transmit" an image to a partner by creating an image on grid paper. Learners then use a code of zeroes...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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    This activity (on page 3 of the PDF) is a full inquiry investigation into how some desert birds keep their cool. Learners will make four model Saguaro nests out of Styrofoam ice chests, insert...

    $10 - $20 per group Ages 8 - 14 1 to 7 days
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    In this activity (page 1 of PDF), learners will construct an air cannon by cutting a hole in the bottom of a bucket and stretching a garbage bag over the other end. Then, they aim the cannon at a...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    In this activity about saturation (page 1 of PDF), learners will build a series of sand castle towers using a 16 oz cup. Learners begin with completely dry sand and then add a ¼ cup of water to the...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes

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