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In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion.

In this yummy biology activity (page 3 of the PDF), learners participate in a demonstration of natural selection.

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 online activity about heart disease, learners will pick one of three patients (based on actual patient histories) and help a cardiologist diagnose and prescribe treatments for him or her.

In this online activity about heart disease, learners will, with the virtual help of an actual surgeon, watch a virtual bypass surgery.