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    Lawrence Hall of Science
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    Millions of organisms can live in and around a body of water. In this outdoor activity, learners will create their own quadrant, a tool scientists use to estimate the number of organisms in an...

    1 cent - $1 per student Ages 8 - adult 45 to 60 minutes
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    National Optical Astronomy Observatory
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    This is a classic exercise for visualizing the scale of the Solar System. Both the relative size and spacing of the planets are demonstrated in this outdoor exercise, using a mere peppercorn to...

    1 cent - $1 per group Ages 6 - adult 45 to 60 minutes
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    Astronomical Society of the Pacific
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    This fun, nighttime hands-on astronomy activity lets learners explore how long it takes for light from different objects in the universe to reach Earth. The activity shows participants the...

    1 cent - $1 per group Ages 8 - adult 1 to 2 hours
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    Lawrence Hall of Science
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    In this craft activity, learners create a string of cut-out moons and stars. This activity is phrased to encourage a parent and child to look at the Moon every night, and make simple illustrations...

    1 cent - $1 per student Ages 4 - adult 30 to 45 minutes

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    • Oregon Museum of Science and Industry (remove)
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