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    BioEd
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    In this activity, learners observe what happens when yeast cells are provided with a source of food (sugar). Red cabbage "juice" will serve as an indicator for the presence of carbon...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    Science Friday
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    In this activity, learners perform an experiment to find out what determines a flower's color. Learners extract petal juice, use acid and base indicators, and observe chemical reactions to...

    $10 - $20 per group Ages 11 - 14 45 to 60 minutes
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    Centers for Ocean Sciences Education Excellence
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    In this four-part activity, learners will discover the exciting world of light--the most important form of energy in our world--and be able to identify and describe different types of light....

    Over $20 per group Ages 11 - 14 1 to 2 hours
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    Bridge: Online Ocean Science Education Resource Center
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    In this environmental science and data analysis activity, learners work in groups to track a Dead Zone (decreased dissolved oxygen content of a body of water) using water quality data from the...

    free Ages 14 - 18 1 to 2 hours
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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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    New York Hall of Science
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    This is an activity about turbidity, or the amount of sediment suspended in water. Learners will discover how this important characteristic affects aquatic life as they observe different water...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    NOAA
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    In this activity, learners play NOAA's Carbon Tracker game and discover ways to keep track of carbon dioxide and other greenhouse gases in the world. This game will help learners better...

    free Ages 11 - 18 10 to 30 minutes
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    NOAA
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    In this group activity, learners act out key stages of the "ocean carbon cycle" (also known as the "carbonate buffer system") through motions, rearranging blocks and team tasks....

    $1 - $5 per group Ages 11 - 14 45 to 60 minutes
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    Twin Cities Public Television
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    This activity (page 2 of the PDF under SciGirls Activity: Bogs) is a full inquiry investigation into decomposition. Groups of learners will carefully observe and record the appearance of items,...

    $10 - $20 per group Ages 8 - 14 1 to 4 weeks