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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    In this activity, learners collect, categorize, weigh and analyze classroom trash and discuss ways that engineers have helped to reduce solid waste. Learners make predictions on the types of trash...

    $1 - $5 per group Ages 8 - 11 1 to 2 hours
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    Twin Cities Public Television
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    This activity (located on page 3 of the PDF) is a full inquiry investigation into design optimization using recycled materials. Groups of learners will design a study that seeks out the...

    Over $20 per group Ages 8 - 14 1 to 2 hours