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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 (on pages 12-15), learners make a crater model and test the effects of weather (rain) on its surface.

This activity (on pages 23-27) lets learners simulate the work of scientists who take core samples of Earth's rocky layers to determine geological history.

In this activity (on pages 6-11), learners work as a team to investigate how impact craters on Earth, the Moon or other planets take shape and what patterns they make.

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.

This activity features two connected hands-on activities about dinosaur bones.

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