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In this activity, learners observe the hydrologic cycle in action as water evaporates and condenses to form rain right before their eyes.

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 to investigate the effect of elevated levels on CO2 on plant growth.

Learners develop an understanding of air pressure in two different activities.

This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset.