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    Lawrence Hall of Science
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    In this outdoor activity, learners use a "litter-critter" wheel to help them identify different animals they find living in a natural litter habitat. Learners also become familiar with...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes
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    University of Nebraska State Museum
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    This activity (on pages 24-29) combines science and art to introduce learners to how different animal pollinators spread pollen from one plant to another, and how certain shapes, colors, and smells...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    Twin Cities Public Television
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    In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    Science Friday
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    In this activity, learners conduct a series of hands-on experiments that demonstrate how the working of plants' veins, known as capillary action, enables water to travel throughout the length...

    $5 - $10 per student Ages 11 - 14 1 to 7 days
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    Smithsonian Center for Education and Museum Studies
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    In this online interactive, learners use fossils to infer temperatures 55 million years ago, at the sites where the fossils were found. Using their observation skills, learners examine fossils of...

    free Ages 11 - 18 10 to 30 minutes
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    BBC
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    In this activity, learners investigate how plants use water. By making the flowers change color, learners see how water moves up the stem to the leaves and the flowers. Use this activity to discuss...

    $5 - $10 per group Ages 6 - 11 4 to 24 hours
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    National Health Museum
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    In this activity, learners calculate the number of milliliters of water a nearby tree transpires per day. First, teams of learners go outdoors to collect five leaves from a mulberry or cottonwood...

    $1 - $5 per group Ages 14 - 18 4 to 24 hours
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    4-H
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    In this outdoor activity, learners work in pairs using their senses—especially touch—to learn more about individual trees. After reading and discussing Shel Silverstein's storybook "The...

    $5 - $10 per group Ages 8 - 18 1 to 2 hours
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    Smithsonian National Zoological Park
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    In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments. Use this experiment to predict what...

    $1 - $5 per student Ages 6 - 14 45 to 60 minutes
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    Lawrence Hall of Science
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    In this outdoor activity, learners make models of homes that might protect small animals from the elements, then search living plants for real structures made by small animals. Learners examine...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes

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