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    Science Museum of Minnesota
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    This is an online simulation of how sound changes due to environment. How does place--like a cave, a pier, or a forest--affect certain sounds? Move the sound pieces around and change the location...

    free Ages 4 - 8 5 to 10 minutes
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    NISE Network
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    In this activity, learners use sieves with different-sized holes to sort balls by size. They learn that researchers are developing new technologies that can sort nano-sized things, including...

    Over $20 per group Ages 4 - adult 5 to 10 minutes

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