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In this activity, learners use models of fossilized dinosaur teeth to understand how dinosaur teeth were used.

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 (page 5 of the PDF), learners will create a food web and explore food sources for different organisms. They will identify relationships between organisms in an ecosystem.

In this outdoor activity, learners design devices that will catch prey or gather plants.