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    Children's Museum of Indianapolis
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    In this activity, learners compare the ways of life of Plains Native Americans who hunted and moved frequently to follow the buffalo herds, and Native Americans who farmed and lived in more...

    $10 - $20 per group Ages 4 - 11 30 to 45 minutes
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    Mount Holyoke College
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    In this activity, learners discover how a cabbage juice indicator helps identify acids and bases, and how iodine indicates the presence of starch. Learners test cream of tartar, baking soda, lemon...

    $10 - $20 per student Ages 4 - 8 10 to 30 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners observe and discuss a simple model of a wet scrubber, a device for cleaning industrial air pollution. This demonstration can be combined with other demonstrations and activities to create...

    $10 - $20 per group Ages 8 - 14 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    Learners build a simple one-cell battery and use an ammeter to measure the flow of current. They add solutions of sodium sulfate and copper sulfate to separate bowls, and connect the solutions with...

    $10 - $20 per group Ages 11 - adult Under 5 minutes
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    Twin Cities Public Television
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    In this environmental engineering activity, learners build windmills using everyday items. The first challenge is to build windmills that spin when placed in front of a fan. The second challenge is...

    $10 - $20 per group Ages 8 - 14 2 to 4 hours
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    Sciencenter
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    In this chemistry challenge, learners discover that many chemical reactions involve heat loss or gain. With this understanding, they try to find a combination of chemicals that could be used to...

    $10 - $20 per group Ages 4 - 14 10 to 30 minutes
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    Center for Engineering Educational Outreach, Tufts University
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    Learners work with plastic sheeting, masking tape, and string to design the perfect material for plastic chair webbing, and then construct their webbing. Since the best webbing would resist...

    $10 - $20 per group Ages 11 - 14 1 to 2 hours
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    Sciencenter
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    In this challenge, learners figure out how to make a juice stain disappear. (Younger learners will definitely need assistance, and safety instructions are included in the PDF.) First they...

    $10 - $20 per group Ages 4 - 14 30 to 45 minutes
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    BioEd
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    In this four-day activity, learners grow bacteria and/or fungi from a variety of locations and compare the results. They will learn that microbes are everywhere; some such as bacteria and fungi...

    $10 - $20 per group Ages 8 - 14 1 to 7 days
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    COSI
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    In this activity (page 11 of the PDF), learners investigate how quickly water moves through various materials. They measure and compare the permeability of gravel, sand, and soil. Although this was...

    $10 - $20 per group Ages 11 - 14 45 to 60 minutes

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