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    New Jersey Department of Education
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    Water treatment on a large scale enables the supply of clean drinking water to communities. In this activity, learners develop methods to clean a polluted water sample, describe components of a...

    $5 - $10 per group Ages 11 - adult 45 to 60 minutes
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    COSI
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    In this activity about soil (page 7 of the PDF), learners will use their sense of touch as well as sight to understand how soil is classified based on texture and other details. They will compare...

    $5 - $10 per group Ages 8 - 11 4 to 24 hours
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    Lawrence Hall of Science
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    In this outdoor activity/field trip, learners explore the concept of population density. Using a simple hunt-and-walk technique, learners will count several kinds of desert plants and compare their...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Lawrence Hall of Science
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    In this outdoor mapping activity, learners explore where plants grow and map plant-distribution patterns. Learners also investigate environmental factors such as wind, light, moisture, and animal...

    $5 - $10 per group Ages 8 - 18 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    In this activity, learners grow germs collected from their hands and other objects. They cultivate the germs on a growth medium (such as slices of grapefruit or processed cheese) for a week....

    1 cent - $1 per student Ages 6 - 14 1 to 7 days
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    Lawrence Hall of Science
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    Millions of organisms can live in and around a body of water. In this outdoor activity, learners will create their own quadrant, a tool scientists use to estimate the number of organisms in an...

    1 cent - $1 per student Ages 8 - adult 45 to 60 minutes
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    Lawrence Hall of Science
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    Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water. In this outdoor activity, learners will build a scoop to observe creatures living in soil, and...

    $1 - $5 per group Ages 6 - adult 30 to 45 minutes