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    COSI
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    In this environmental science activity (page 4 of the PDF), learners use vinegar and chalk to observe the effect of acid rain on various building materials and plant life. Learners will explore how...

    $1 - $5 per group Ages 6 - 14 4 to 24 hours
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners conduct a simple experiment to model and explore the harmful effects of acid rain (vinegar) on living (green leaf and eggshell) and non-living (paper clip) objects. Learners observe the...

    $1 - $5 per group Ages 8 - 14 4 to 24 hours
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    National Health Museum
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    In a series of three experiments, learners explore the basics of biotechnology using self-locking plastic baggies. Each experiment demonstrates a phenomenon or principle of biotechnology. In the...

    Over $20 per group Ages 14 - 18 4 to 24 hours