Curated OER
Carousel on Democracy
Fifth graders examine the municipal, provincial, federal levels of government. They study the process of making a presentation to a level of government.
US Geological Survey
Usgs: Public Water Supply
This site from the U.S. Geological Survey provides a definition of public water supply, classification of public water, a description of consumption, supply, and distribution of water, water quality, a small public water-supply system,...