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In this activity, learners investigate feeding relationships. Learners complete a food web and then make a mobile to represent a food chain.

This activity focuses on interactions within Earth systems and the effects of human activities. In this activity learners build a biomass pyramid.

In this activity, learners use sets of cards to assign microorganisms to different groups.

In this outdoor fall activity, learners find out what living in or under a layer of leaves is like.