In this lesson, students will explore how water is continually cycled among land, the oceans, and the atmosphere.

This site provides a comprehensive introduction to the water cycle. Students construct a model to simulate parts of the water cycle. Includes background information, links to standards, lesson plans, and assessment ideas.

Describes the four main stages of the water cycle - evaporation, condensation, precipitation, and collection.

A good project to link math skills with ecology. Hands-on activies help students understand the role of trees in ecosystems.

This site explores the importance of clouds and how clouds are formed. Content details common atmospheric cooling mechanisms and atmospheric stability.