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Professor John Endler traveled to Trinidad in the 1970s to study wild guppies. In this activity, learners take part in an online simulation of Endler's work.

In this activity, learners simulate a wolf and its habitat and observe what happens when the limiting factors change over time.

In this geography investigation, learners use a nighttime satellite image to observe areas of light across the United States and to identify patterns and spatial distributions of human settlements.

Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.