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In this activity, learners will simulate the interactions between a predator population of gray wolves and a prey population of deer in a forest.

In this multi-faceted game (on pages 25-35), learners recreate what happens to creatures in the Brazilian rain forest as they grow from egg to adult—especially those that use fallen, empty Brazil nut

In this activity (page 7 of pdf), learners research tide pool ecosystems, and then create brochures that "advertise" these environments.

In this activity, learners construct possible food webs for six different ecosystems as they learn about the roles of different kinds of living organisms.