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    National Health Museum
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    This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell. By analyzing four sand-filled cubic models ...

    $1 - $5 per group Ages 14 - 18 45 to 60 minutes
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    National Health Museum
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    In this activity, learners construct a model of DNA to better understand the structure of DNA and protein synthesis. First, learners follow simple instructions and an instructor's...

    Over $20 per group Ages 8 - adult 1 to 2 hours
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    National Health Museum
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    In this activity, learners simulate nature's water filtration system by devising a system that will filter out both visible and invisible pollutants from water. Each group is asked to design a...

    $5 - $10 per group Ages 8 - 18 1 to 2 hours
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    Museum of Science and Industry, Chicago
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    Learners design, build and test a model bridge out of straws. The bridge must span 25 cm across a gap between two tables or two chairs. To measure the load, the bridge must securely hold a small...

    $1 - $5 per group Ages 6 - 18 30 to 45 minutes
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    NASA
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    In this activity, learners build models of comets, using edible materials, to learn about comets' structure. Learners then use their senses to simulate a spectrometer to analyze "comets...

    Over $20 per group Ages 6 - 18 45 to 60 minutes
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    U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy
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    In this activity, learners design, build and test wind turbines. Learners go through the design process and use the scientific method to test important blade variables. Learners then use this data...

    Over $20 per group Ages 8 - 18 2 to 4 hours

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