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    Museum of Science and Industry, Chicago
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    See what happens when plants compete for survival in an area with limited resources. What survives? How is plant quality affected? Any plant that can get more water, nutrients, and sunlight than...

    $1 - $5 per group Ages 6 - 18 1 to 4 weeks
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    Twin Cities Public Television
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    This activity (page 2 of the PDF) is a full inquiry investigation into decomposition. Groups of learners will carefully observe and record the appearance of items, such as an apple, that can...

    $10 - $20 per group Ages 8 - 14 1 to 4 weeks
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    APSnet
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    In this lab, learners explore Koch's Postulates, the critical step used to prove that a particular microbe is the cause of a specific disease in a host organism (plant or animal). This is...

    Over $20 per group Ages 11 - 18 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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    The Center for Science Education @ Space Sciences Laboratory, UC Berkeley
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    In this activity, learners use an astrolabe to measure the altitude of objects. Learners will first practice taking measurements by measuring the altitude of trees and buildings. Then, learners...

    $1 - $5 per student Ages 6 - 14 1 to 4 weeks
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    NASA
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    In this activity, learners will train to increase bone strength and to improve heart and other muscle endurance by performing jump training with a rope, both while stationary and moving. Learners...

    free Ages 8 - 14 1 to 4 weeks
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    Educational Development Center, Inc.
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    In this indepth hands-on activity, learners build a structure that allows them to observe the growth of roots and the correlation between root growth and stem extension. Because no dirt is used in...

    $10 - $20 per group Ages 8 - 14 1 to 4 weeks
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    Museum of Science and Industry, Chicago
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    Learners assemble a figure from a nylon stocking or sock stuffed with soil and seeds. The ends of the nylons inside the jar absorb water, which feeds the grass seeds. The seeds grow to become...

    $1 - $5 per student Ages 4 - 11 1 to 4 weeks

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