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In this online activity, learners adjust mountain snowfall and temperature to see how glaciers grow and shrink. They will use scientific tools to measure thickness, velocity and glacial budget.

This is an activity which will allow learners to gain an understanding of lemur behavior through observation and role play.

In this activity, learners explore the physics of impact craters from their own backyard using mud. Learners are encouraged to match features of real impact craters to their models.

In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate.

In this online activity, learners can test their skills at finding constellations in the northern hemisphere's night sky.

In this kinesthetic activity that demonstrates pressure, learners act as air molecules in a "container" as defined by a rope.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.

In this outdoor activity, learners play a game of Tag to discover how neurons attach themselves to each other to form a chain.

In this online activity, learners will explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement.

This online interactive has three activities in the NanoLab (press the upper right button): Build, Zoom, and Transform.

This activity explores what it means for a computer to be intelligent and introduces the topic of what a computer program is and how everything computers do simply involves following instructions writ

In this demonstration (9th on the page), learners explore eyewitness memory and how memories differ amongst individuals. While the rest of the group is minding their own business (i.e.

Pairs of learners play the roles of programmer and robot. The programmer gives specific directions to the robot to accomplish a simple task (e.g. walk across the room and pick up a pencil).

In this activity, learners simulate the behavior of the atmosphere.

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.