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Bean Bugs
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In this outdoor biology and math activity, learners estimate the size of a population of organisms too numerous to count.
Counting With Quadrants
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Millions of organisms can live in and around a body of water.
Clam Hooping
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In this two-part outdoor activity, learners conduct a population census of squirting clams on a beach or mudflat, and investigate the clams' natural history.
Tree Tally
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In this outdoor activity and fun race, learners first find the most common type of tree in a forest site.