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    Lawrence Hall of Science
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    Plants need nutrients to grow. This is why we apply fertilizers to grass and food crops. In this activity, learners will explore how fertilizers can affect lakes and other bodies of water. Learners...

    $5 - $10 per group Ages 8 - adult 1 to 4 weeks
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    New Jersey Department of Education
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    Water sticks to all kinds of things in nature — flowers, leaves, spider webs - and doesn't stick to others, such as a duck's back. In this activity, learners explore water adhesion (when...

    $5 - $10 per group Ages 8 - 18 30 to 45 minutes
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    California Academy of Sciences
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    In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting. This activity can be conducted as a demonstration...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    California Academy of Sciences
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    In this activity, learners practice the steps involved in a scientific investigation while learning why ice formations on land (not those on water) will cause a rise in sea level upon melting. This...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    University of Nebraska State Museum
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    In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker. First they use a map to track the movement of the spill...

    $5 - $10 per group Ages 8 - 14 1 to 2 hours
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    Astronomical Society of the Pacific
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    This chocolate chip cookie recipe includes templates for baking night sky constellations of the season right on top! Two templates are included, one for 9pm mid-April, and one for 10pm mid-July....

    $5 - $10 per group Ages 6 - adult 10 to 30 minutes
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    Chicago Children's Museum
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    In this activity, learners explore the possibilities of clay as a natural material. At three stations, learners create sculptures, use natural items such as small pebbles, twigs, and pinecones to...

    $5 - $10 per group Ages 4 - 11 30 to 45 minutes
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    Centers for Ocean Sciences Education Excellence
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    In this activity, learners are challenged to design a planktonic organism that will neither float like a cork nor sink like a stone. They are given pictures of planktonic organisms and simple...

    $5 - $10 per group Ages 8 - adult 30 to 45 minutes
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    BioEd
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    In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients. Learners investigate, on a small scale, the changes that...

    $5 - $10 per group Ages 8 - 14 1 to 7 days
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    Lawrence Hall of Science
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    In this outdoor activity and observation game, learners hunt for a variety of textures, colors, odors and evidence of organisms in the activity site. The activity can be done with same age or mixed...

    $5 - $10 per group Ages 4 - adult 30 to 45 minutes

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    • Oregon Museum of Science and Industry (remove)
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