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    The Exploratorium
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    With a bit of PVC, a laser, a can/cup, and a small mirror, you can make a device that visualizes you voice or any sound transmitted into the cup/can. Make beautiful patterns on a white wall as you...

    free Ages 8 - adult 10 to 30 minutes
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    Association of Zoos and Aquariums
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    In this activity, learners discover how landfills affect the natural environment. By observing a 2-liter bottle filled with household garbage over a month, learners can estimate how long it takes...

    free Ages 8 - 18 1 to 4 weeks

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    • Oregon Museum of Science and Industry (remove)
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