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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.
Measuring Biodiversity
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Learners use a variety of beans to represent a variety of species, and scatter these beans over a large piece of paper representing the environment.
Topographic Investigation: Map an Underwater Surface
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In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.
Counting Your Lucky Stars
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In this activity, learners sample a star field to estimate the number of stars in the universe.