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In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.

Learners follow a three-step process to start their own rock collection.

In this activity (on pages 16-21), learners get a sense of geological time by understanding how big a million is.

In this activity, learners rotate through several learning and play stations to explore dinosaurs and paleontologists.

In this activity, learners model ancient lunar impacts using water balloons.