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    Centers for Ocean Sciences Education Excellence
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    In this activity, learners role-play the part of lake inhabitants and the aquatic exotics who displace the native species. Props are used to help demonstrate how aquatic exotic species enter a lake...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes
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    COSI
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    In this activity (page 5 of the PDF), learners will create a food web and explore food sources for different organisms. They will identify relationships between organisms in an ecosystem. Though...

    $1 - $5 per group Ages 6 - 11 45 to 60 minutes
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    Lawrence Hall of Science
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    In this outdoor activity, learners plan a simple foot path and create an environmental impact study of the natural area where the path would be. These steps help learners role-play the scientific...

    $10 - $20 per group Ages 8 - 18 1 to 2 hours
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    New Jersey Department of Education
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    In this activity, learners create a freshwater ecosystem in a large plastic bottle. Learners cut and prepare bottles, then fill with water, aquatic plants, snails and fish. Learners observe their...

    $10 - $20 per group Ages 8 - 18 1 to 7 days
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    Twin Cities Public Television
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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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    Children's Museum of Indianapolis
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    In this activity, learners compare the ways of life of Plains Native Americans who hunted and moved frequently to follow the buffalo herds, and Native Americans who farmed and lived in more...

    $10 - $20 per group Ages 4 - 11 30 to 45 minutes
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    University of Nebraska State Museum
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    In this activity (on pages 36-39), learners make a model of a watershed out of paper, then run water down the mountain to simulate how rainfall and pollution affect watersheds. Learners are...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    New Jersey Department of Education
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    Learners create a model of a wetland to observe how it absorbs and filters water from the environment. In part 1, learners make it "rain" on their wetland model and compare their...

    $1 - $5 per group Ages 8 - 18 45 to 60 minutes
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    NOAA
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    In this activity, learners are introduced to tree rings by examining a cross section of a tree, also known as a “tree cookie.” They discover how tree age can be determined by studying the rings and...

    1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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    BioEd
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    In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients. Learners investigate, on a small scale, the changes that...

    $5 - $10 per group Ages 8 - 14 1 to 7 days

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