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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners build a simple aneroid barometer to learn about changes in barometric pressure and weather forecasting. They observe their barometer and record data over a period of days. This activity...

    $1 - $5 per student Ages 8 - 14 1 to 4 weeks
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    University of Wisconsin-Madison
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    In this investigation, learners plant seeds in a 2-liter bottle filled with soil that is connected to a water source below. Over the next few weeks, learners observe how the plants grow. The...

    $1 - $5 per student Ages 4 - 14 1 to 4 weeks
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    University of Wisconsin-Madison
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    Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle. The fermentation process takes from 3 days to 2 weeks to complete, and learners measure the...

    $1 - $5 per group Ages 4 - 14 1 to 4 weeks
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    COSI
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    In this chemistry activity (page 1 of the PDF), learners will observe a physical change. By making their own sugar or salt crystals, learners will identify physical changes and see how they can be...

    $1 - $5 per student Ages 6 - 14 1 to 4 weeks
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    As a model of acid rain, learners water plants with three different solutions: water only, vinegar only, vinegar-water mixture. After a period of days or weeks, learners see the effect acid has on...

    $10 - $20 per group Ages 8 - 14 1 to 4 weeks
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    NOAA
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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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    Oregon Museum of Science and Industry
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    This display shows slow chemical reactions in colorful crystal formations known as Liesegang Rings. These reactions are similar to those forming the rings in agates. This activity is recommended...

    $5 - $10 per student Ages 14 - adult 1 to 4 weeks
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    Science Museum of Minnesota
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    Build a fruit fly trap out of a 2-liter plastic bottle and some rotten fruit! Fruit flies are easy to catch in warm weather. Once you catch some, you will be able to see their life cycle up-close....

    1 cent - $1 per student Ages 4 - 11 1 to 4 weeks
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    The Exploratorium
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    In this hands-on botany activity, learners sprout vegetables in film canisters. Learners grow nine seeds each of cabbage, radish, and parsley, experimenting with changing one variable (light, water...

    1 cent - $1 per student Ages 4 - 11 1 to 4 weeks
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    BioEd
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    In this food science activity, learners conduct an experiment that demonstrates the importance of light to plants. This 1-2 week activity allows learners to learn about the needs of plants and...

    $5 - $10 per group Ages 8 - 14 1 to 4 weeks

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