Search Results

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

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.

In this activity, learners will decide together on a question about how far, long or high the group could reach together.

Learners make a counting/estimating jar to exchange with friends or bring home.

In this "Sid the Science Kid" activity from Episode 103: Enough With the Seashells!, learners practice estimating numbers of objects (like shells) and then check their estimates by counting.

In this outdoor activity, learners simulate an oil spill using popcorn (both oil and popcorn float on water), and estimate the spill's impact on the environment.