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    American Museum of Natural History
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    Learners follow a three-step process to start their own rock collection. Learners will collect rocks, record information about each rock on a Rock Chart, observe and sort their rocks, and create a...

    $1 - $5 per student Ages 8 - 14 1 to 7 days
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    Howard Hughes Medical Institute
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    In this interactive activity, learners analyze seashells to explore phylogeny and evolution. Learners identify similar and dissimilar seashells to create a phylogenetic tree. The Teacher Guide...

    free Ages 11 - 18 10 to 30 minutes

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