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In this activity, learners act as water molecules and travel through parts of the water cycle to discover that it is more complex than just water moving from the ground to the atmosphere.

In this activity, learners conduct an experiment by heating an aluminum can filled with water to investigate air pressure.

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

In this online activity, learners see simulations of how processes shape the Earth, and see estimates of how long these processes take.

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

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 interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral.

In this activity, learners investigate the food, water, and space needs of common livestock animals.