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    American Museum of Natural History
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    In this activity, pairs of learners will create two make-believe dig sites by burying chicken bones in plaster of Paris--a powder that hardens when wet. Then, learners try to excavate (dig out)...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    Twin Cities Public Television
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    This activity (page 2 of the PDF under SciGirls Activity: Bogs) is a full inquiry investigation into decomposition. Groups of learners will carefully observe and record the appearance of items,...

    $10 - $20 per group Ages 8 - 14 1 to 4 weeks