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    In this experiment, learners examine the way oil affects bird feathers and test different cleanup methods to find out which works best. Learners answer questions throughout the investigation,...

    $1 - $5 per group Ages 6 - 14 10 to 30 minutes
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    In this activity, learners use simple items to construct a device for indicating air pressure changes. Learners build aneroid barometers (also known as "dry" barometers) and record the...

    $1 - $5 per student Ages 8 - 18 1 to 4 weeks
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    In this activity, learners experiment and observe how the color of materials that cover the Earth affects the amounts of sunlight our planet absorbs. Use this activity to begin discussions on...

    1 cent - $1 per group Ages 8 - 18 30 to 45 minutes
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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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    In this 7-10 day investigation, learners develop an understanding of waves and tides and their motion through discussion, demonstration, and hands-on activities. Learners demonstrate wave motion in...

    $1 - $5 per group Ages 11 - 14 1 to 4 weeks
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    In this activity, learners explore the factors that tend to resist changes in pH of the ocean and why the ocean is becoming more acidic. This lesson guides inquiry into some properties of the ocean...

    Over $20 per group Ages 14 - 18 1 to 2 hours
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    In this activity, learners model estuaries, artificially enriching both fresh and salt water samples with different amounts of nutrients and observing the growth of algae over several weeks....

    $5 - $10 per group Ages 14 - 18 1 to 4 weeks
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    In this activity, learners make a model of a pollution spill that occurred at Bangs Lake in Mississippi and measure water quality parameters in their model. Learners then study the actual spill,...

    Over $20 per group Ages 14 - 18 2 to 4 hours
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    In this activity on page 24, learners perform experiments to examine whether or not trash can float, blow around, or wash away. Then learners analyze the effects of these characteristics on marine...

    1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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    In this activity on page 27, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation. Learners...

    $1 - $5 per group Ages 8 - 14 1 to 12 months

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