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Millions of organisms can live in and around a body of water.

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.

Data in computers is stored and transmitted as a series of zeros and ones. Learners explore how to represent numbers using just these two symbols, through a binary system of cards.

In this activity, learners sample a star field to estimate the number of stars in the universe.

In this outdoor activity/field trip, learners explore the concept of population density.