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Ecosystems | Activity 2.1

Activity 2.1: Predictions About Patterns in Ecosystems (30 min)

Students make predictions about the patterns of biomass in a meadow ecosystem.

Resources Provided


For Activity 2.1, open the 2.1 Predicting Patterns in Ecosystems PPT and project it. Prepare enough copies of the 2.1 Predictions Tool For Ecosystemsfor each student to have one.


1. Use the instructional model to show students where they are in the course of the unit.


Ideally, the discussion about the Predictions Tool in this activity will reveal a range of student ideas. Level 4 students will realize that the biomass of producers must be much larger than the biomass of herbivores, which, in turn will be much larger than the biomass of carnivores. Level 2 and 3 students may assume that the biomass of producers, herbivores, and carnivores may be more equal or have other ideas about biomass patterns in ecosystems. Use the 2.1 Assessing Predictions Tool For Ecosystems to assess students' ideas.