This United States Geological Survey site focuses on water and its properties. The site contains activities for teachers and students, along with pictures, data, maps, and an interactive center where users can give opinions and test their water knowledge. Unique aspects of this site include the sections that contain student work and a picture gallery. There are links to other resources for students, ... Full description.

Follow the adventures of a single raindrop character through the water cycle. The text is written at an appropriate level for primary students, and the illustrations will be compelling for young learners. A diagram the last page serves as a review of the raindrop's travels. Full description.

This activity integrates art and science as students use books and other sources to learn more about the creatures that live in the ocean. Once they have learned about various sea creatures and their habitats, they will construct an undersea environment in their classroom. Full description.

In this activity, younger students enact the process by which precipitation (rain, snow, and hail) falls on an area and becomes standing water, run-off, or groundwater. They will learn general information about precipitation processes, aquifers, and the importance of clean groundwater. Full description.

This module features classification activities that will lead students from simple sorting of familiar objects to classifying materials into liquids, gases, and solids. Full description.

This teaching guide provides hands-on activities and information related to studying the Earth system. Its primary goal is for children to become familiar with the concept of cycles and to learn that some human activities can cause changes in their environment. Full description.

In this lesson, students will collect and graph precipitation data, specifically the amount of rainfall at a locality, then compare their findings with other students' data. Full description.

Through this lesson plan students focus on a predetermined vocabulary list, then use the words, definitions, or familiar context to draw (either by hand or on the computer) a picture that depicts that word. Detailed Procedure and Materials, Vocabulary linked to an on-line glossary, and Teacher Notes are provided. This activity is related to the Students' Cloud Observations Online (S?COOL) project. Full description.

The Gulf of Maine Aquarium hosts this two-part activity. The focus is on seasonal changes in the mass balance of the Antarctic Ice Sheet. Part 1 uses an atlas and satellite imagery to examine the geography of the region and the changing boundaries of the ice sheet. Part 2 tracks annual changes in sea ice. There is an animation page showing changes in ice cover around Antarctica during 1991, and links ... Full description.

This is the education section of a larger site about the Aquarius underwater habitat in the Florida Keys. It includes classroom activities exploring concepts of buoyancy, pressure and light; a series of classroom activities exploring the biology of corals; and an on-line book about coral reef biology. Full description.