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In this activity, learners discover how geologists use stratigraphy, the study of layered rock, to understand the sequence of geological events.

In this activity, learners receive a labeled plastic film canister containing a material representing a pollutant (i.e. pencil shavings = a beaver's wood chips).

In this activity, (on page 6 of the PDF under SciGirls Activity: Dinosaurs) learners participate in a hands-on fossil excavation.

In this multi-station lab, learners conduct a series of experiments to explore the processes and effects of weathering and erosion.

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