The water cycle is one of earth's most easily observable processes, but demonstrating each step within classroom walls can be a challenge. Through a series of videos and quick demonstrations, cover each aspect of the hydrologic cycle in just two days, or, if you have the time, extend the learning beyond the basics with some of the additional lessons or activities created by the brilliant minds at NASA. Designed for the Next Generation Science Standards, these interactive and engaging exercises will ensure that your class learns all they need to know about the sun and gravity's effects on the water cycle.