There are also databases that provide comprehensive lists of reviewed curriculum specifically for expanded learning programs. The reviewed curriculum spans across various grade levels, disciplines, & subject matter.
Welcome to the U.S. Geological Survey's (USGS) Water Science School. Here you can find information on many aspects of water along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge. Check out the updated, interactive water cycle diagrams developed for specific grade levels and the easy to explore page for adults and kids alike to find more information on the always changing forms and properties of water.