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    American Museum of Natural History
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    In this activity, learners start their own field journal to better understand the wildlife in their area. Learners select an animal to observe, record observations about the animal's...

    free Ages 6 - 11 30 to 45 minutes
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    National Optical Astronomy Observatory
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    In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database. This popular program has generated 100,000...

    free Ages 4 - adult 10 to 30 minutes
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    Kohl Children's Museum
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    In this activity, learners discover how exercise helps keep the body healthy. Learners increase their heart rates by running and understand how running fast versus walking affects their pulse rates.

    free Ages 6 - 14 10 to 30 minutes
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    NOAA
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    In this activity, learners will measure the length of their shadow from the Sun and compare it three to four months later. This process will help learners investigate Earth's rotation and...

    free Ages 6 - 14 1 to 12 months
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    Lawrence Hall of Science
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    In this group or individual activity, learners are encouraged to watch birds near home or school—possibly where birds are nesting in a tree, pecking in a park, feeding from a feeder, or flying...

    free Ages 6 - 14 1 to 7 days
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    Institute of Physics
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    In this indoor or outdoor demonstration, use a large and small ball to illustrate conservation of energy and momentum. Learners will compare how high the balls bounce when bounced individually or...

    free Ages 4 - adult Under 5 minutes
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    NASA
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    In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system. Learners can see the parallax effect in action by holding their thumb...

    free Ages 6 - 18 Under 5 minutes