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    Omaha's Henry Doorly Zoo
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    In this activity, learners gain a better understanding of how household/school waste breaks down in a landfill. Learners collect trash and then create miniature landfills in 2-liter bottles....

    1 cent - $1 per student Ages 4 - 14 1 to 4 weeks
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    Centers for Ocean Sciences Education Excellence
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    This activity focuses on interactions within Earth systems and the effects of human activities. In this activity learners build a biomass pyramid. This game shows how factors affecting lower...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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    Omaha's Henry Doorly Zoo
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    In this activity, learners can play two card games related to endangered species, specifically North American amphibians. In version one, "Guess My Amphibian," a learner secretly selects...

    1 cent - $1 Ages 6 - 11 5 to 10 minutes
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    American Association for the Advancement of Science
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    Learners discover that their breath contains carbon dioxide, one of the pollutants found in car exhaust. They blow bubbles into water, then use an indicator (bromothymol blue) to see that the water...

    1 cent - $1 per group Ages 8 - 11 5 to 10 minutes
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    Biotechnology and Biological Sciences Research Council
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    In this activity, learners use information gathered from a variety of sources to design and make their own insect. Learners design and create an insect using household and/or arts and crafts...

    1 cent - $1 per student Ages 4 - 14 45 to 60 minutes
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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into mapping the underground “plumbing” of geysers. Groups of learners will mimic an actual investigation into the...

    1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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    NOAA
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    In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials. Learners group together and link arms or hold hands to form chemical...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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    Chicago Children's Museum
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    This great "re-use it" activity will demonstrate how to transform a greeting card into a box. Once constructed, the box can have many uses like holding special notes or keepsakes. This...

    1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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    4-H
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    In this indoor and/or outdoor activity, learners make an anemometer (an instrument to measure wind speed) out of a protractor, a ping pong ball and a length of thread or fishing line. This is a...

    1 cent - $1 per student Ages 8 - 14 10 to 30 minutes