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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...

    Ages 11 - 18
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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...

    Ages 8 - 14
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    Lawrence Hall of Science
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    In this collecting/comparing activity, learners work with samples of sand from different places like a lakefront, river, or ocean beach. Learners note similarities and differences among sand...

    Ages 4 - 14
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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...

    Ages 6 - 18
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    Lawrence Hall of Science
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    In this outdoor activity and observation game, learners hunt for a variety of textures, colors, odors and evidence of organisms in the activity site. The activity can be done with same age or mixed...

    Ages 4 - adult
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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...

    Ages 11 - 18
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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'...

    Ages 4 - 18

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