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    Howard Hughes Medical Institute
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    This guided inquiry three-part activity engages learners in thinking about the mechanism of natural selection by encouraging them to formulate questions that can be answered through scientific...

    $10 - $20 per group Ages 11 - 18 2 to 4 hours
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    Lawrence Hall of Science
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    In this two-part outdoor activity, learners conduct a population census of squirting clams on a beach or mudflat, and investigate the clams' natural history. During the Clam Hooping activity,...

    $5 - $10 per group Ages 8 - adult 1 to 2 hours
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    Lawrence Hall of Science
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    In this outdoor activity/field trip, learners investigate the special shapes, holding structures and holding behaviors that real organisms use in streams, rivers, creeks or coast intertidal zones...

    $5 - $10 per group Ages 8 - 18