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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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    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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    Lawrence Hall of Science
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    In this online activity, learners examine U.S. pennies to find the date each penny was minted or manufactured. Learners enter their data and then are able to see data from other learners. A bar...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    University of Washington
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    In this activity (11th activity on the page), learners use pennies to test their hearing acuity. Learners collect pennies, drop them one at a time on a hard surface and listen to the sounds they...

    free Ages 6 - 18 10 to 30 minutes
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    Biotechnology and Biological Sciences Research Council
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    In this activity (p.6-10 of PDF), learners use different methods for hunting minibeasts (bugs). Learners can either make traps or simply look for minibeasts under stones and logs. Learners can...

    free Ages 6 - 11 45 to 60 minutes
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    The Nuffield Foundation
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    In this activity, learners collect worms and then observe how they move. If learners have never heard the noise a worm makes when it moves on a piece of paper, a surprising new experience awaits...

    $1 - $5 per group Ages 11 - 18 45 to 60 minutes
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    Bill Nye
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    In this activity, learners build an instrument for catching and observing flies. Learners act as entomologists, attract flies into a jar using a slice of apple, and then observe the flies'...

    $1 - $5 per group Ages 4 - 18 1 to 4 weeks