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    University of Washington
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    In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions. Learners sort similar bottle caps in a well-lit...

    free Ages 8 - 18 10 to 30 minutes
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    Science Museum of Minnesota
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    Build a fruit fly trap out of a 2-liter plastic bottle and some rotten fruit! Fruit flies are easy to catch in warm weather. Once you catch some, you will be able to see their life cycle up-close....

    1 cent - $1 per student Ages 4 - 11 1 to 4 weeks
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    Biotechnology and Biological Sciences Research Council
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    In this activity (p.5-6 of PDF), learners investigate natural selection. Learners discover that natural selection, which takes place over decades, can lead to altered populations within a species....

    $5 - $10 per group Ages 8 - 11 10 to 30 minutes
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    NOAA
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    In this activity (on page 7), learners explore the meaning of a "carbon sink." Using simple props, learners and/or an educator demonstrate how plants act as carbon sinks and how...

    free Ages 8 - 14 45 to 60 minutes
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    Institute of Physics
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    In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water. This...

    1 cent - $1 per group Ages 4 - adult Under 5 minutes
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    NSBRI
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    In this activity about the heart (on page 22 of the PDF), learners examine sheep or chicken hearts to learn about the heart's structure and the flow of blood through the heart. Learners will...

    $10 - $20 per group Ages 8 - 14 45 to 60 minutes
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    Association of Zoos and Aquariums
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    In this activity, learners will discover how the thin layers of amphibians' skin allow water and other chemicals to pass through it. Learners will also discover how different body coverings...

    $1 - $5 per group Ages 6 - adult 1 to 7 days
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    Association of Zoos and Aquariums
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    In this activity, learners will discover what it takes to be a frog. By dressing up like one, learners can visualize how each part of the frog plays an important role in surviving its habitat. This...

    $10 - $20 per group Ages 4 - adult 10 to 30 minutes
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    Colorado State University
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    Use this hands-on activity to demonstrate infrared and thermal radiation. Learners will cover their eyes or wear blindfolds and then move their hands to sense the infrared heat coming from a...

    free Ages 8 - 14 Under 5 minutes
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    Omaha's Henry Doorly Zoo
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    In this activity, learners explore the concept of permeability to better understand why amphibians are extremely sensitive to pollution. Learners soak one regular hard-boiled egg and one peeled...

    1 cent - $1 per group Ages 4 - 14 4 to 24 hours

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    • Oregon Museum of Science and Industry (remove)
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