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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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    WGBH
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    In this interactive board game, learners "hire" different types of scientists to help canine character Ruff Ruffman solve unusual problems. Through Ruff's adventures, learners meet...

    1 cent - $1 per student Ages 6 - 11 45 to 60 minutes

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    • Oregon Museum of Science and Industry (remove)
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