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    The Exploratorium
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    In this activity, learners create a model using metric measuring tapes and atmosphere composition data. Learners will investigate the major components of the atmosphere (nitrogen and oxygen) as...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    EPA
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    In this lesson plan, learners examine some of the of greenhouse gas emissions sources in their community. To investigate the sources of greenhouse gas emissions, learners use the Environmental...

    free Ages 11 - 14 45 to 60 minutes