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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

In this seismic simulation, learners play a "who-dunnit" game to explore earthquakes.

In this activity, learners map their world by drawing a plan of their bedroom.

In this online interactive, learners use fossils to infer temperatures 55 million years ago, at the sites where the fossils were found.

This quiz lets you estimate your annual radiation exposure.

In this activity, learners sample a star field to estimate the number of stars in the universe.

In this thought-provoking activity, learners plan a hypothetical project to build and operate wind turbines in their community.

In this activity, learners will explore trends in shark populations using shark landing data from the National Marine Fisheries Service.

MarsBound! is an engineering simulation activity in which learners use realistic techniques to plan a mission to Mars.

In this activity, Christina Elson, an archaeologist from the American Museum of Natural History, guides learners as they investigate an "artifact" and record their observations in a field journal.