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In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.

In this activity, learners use gumdrops and toothpicks to model the composition and molecular structure of three greenhouse gases: carbon dioxide (CO2), water vapor (H2O) and methane (CH4).

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 discover if carbon dioxide has an effect on temperature.

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