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In this outdoor activity, learners measure familiar objects in nature to practice working with the metric system.

How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?

In this outdoor biology and math activity, learners estimate the size of a population of organisms too numerous to count.

In this outdoor activity, learners plan a simple foot path and create an environmental impact study of the natural area where the path would be.