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    Oregon Museum of Science and Industry
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    Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves. The celery-in-colored-water demonstration...

    $5 - $10 per group Ages 8 - 11 1 to 7 days
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    Oregon Museum of Science and Industry
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    This display shows slow chemical reactions in colorful crystal formations known as Liesegang Rings. These reactions are similar to those forming the rings in agates. This activity is recommended...

    $5 - $10 per student Ages 14 - adult 1 to 4 weeks
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    NASA
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    In this activity about engineering, nutrition, and physical activity, learners design and build a healthy bone model of a space explorer which is strong enough to withstand increasing amounts of...

    $5 - $10 per group Ages 8 - 11 1 to 2 hours
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    American Physical Society
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    Learners experiment with water gel crystals, or sodium polyacrylate crystals, which absorb hundreds of times their weight in water. When in pure water, the water gel crystals cannot be seen....

    $5 - $10 per group Ages 11 - 18 45 to 60 minutes
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    Twin Cities Public Television
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    This activity (located on page 4 of the PDF) is a full inquiry investigation to determine the age of fossils based on where they are discovered. Groups of learners will dig for fossils embedded in...

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    Science Friday
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    In this activity, learners review and discuss weathering, erosion and mass wasting, to gain a stronger understanding of how Hickory Run’s Boulder Field was formed after the Laurentide Continental...

    $5 - $10 per group Ages 11 - 14 45 to 60 minutes
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    National Health Museum
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    This laboratory exercise is designed to show learners how DNA can easily be extracted from onion cells. It includes an optional test for the presence of DNA. Use this experiment to supplement any...

    $5 - $10 per group Ages 11 - 18 45 to 60 minutes