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    In this activity, learners identify different plastics in a mystery bag. Learners discover that plastics are classified #1 through #7. Learners then categorize plastics based on characteristics...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this activity, learners build penetrometers to test leaf toughness. Biologists measure leaf toughness to study the feeding preferences of insects and bugs.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing. Learners are encouraged to brainstorm, build, redesign/rebuild, collect data and...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this quick activity about pollutants and groundwater (page 2 of PDF), learners build a model well with a toilet paper tube. Learners use food coloring to simulate pollutants and observe how they...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    In this activity (page 2 of PDF), learners will model how caves are formed by placing one piece of chalk in a cup of vinegar and another piece in a cup of water, then watch and record their...

    $1 - $5 per group Ages 8 - 14 30 to 45 minutes
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    In this activity (page 1 of the PDF), learners will model how paleontologists estimate the age of fossil discoveries by extracting “fossil” playing cards from newspapers stacked in chronological...

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes
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    In this physical sciences activity, learners explore how passive solar design increases energy efficiency. Learners test paperboard models of different building designs to discover how the design...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

    $1 - $5 per group Ages 8 - 14 45 to 60 minutes

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