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    This activity (on page 2 of the PDF) is a full inquiry investigation into aerial imagery. Learners will use the internet to gather free aerial imagery of nearby points of interest (or use laminated...

    free Ages 8 - 14 45 to 60 minutes
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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 activity (located on page 2), learners will construct tiny model geysers out of film canisters, warm water, and antacid seltzer tablets. Thinking about what happens inside the canister to...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    In this activity (on page 1 of the PDF), learners will use a magnifier to carefully examine samples of sand from different locations. They record their observations regarding the different grain...

    $5 - $10 per group Ages 8 - 14 45 to 60 minutes
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    This activity (page 2 of the PDF) is a full inquiry investigation into decomposition. Groups of learners will carefully observe and record the appearance of items, such as an apple, that can...

    $10 - $20 per group Ages 8 - 14 1 to 4 weeks
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    In this online Flash game, learners will explore a coral reef using an underwater remotely operated vehicle (ROV). Faced with concerns that environments around the world might be undergoing rapid...

    free Ages 6 - 14 5 to 10 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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    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 quick activity (page 2 of PDF), learners will model how large depressions near the top of a volcano are formed by using an inflating and deflating balloon submerged in flour. The model...

    $5 - $10 per group Ages 8 - 14 30 to 45 minutes
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    This outdoor activity (on page 2 of the PDF) is a full inquiry investigation into how the amount of moisture in a sand dune relates to the number of plants growing there. Groups of learners will...

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

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