Curated OER
Geography of the United States
Students examine the population growth of the United States.  In this Geography lesson, students construct a map of the fifty states.  Students create a graph of the population of the USA. 
TED Talks
Ted: Ted Ed: What's So Great About the Great Lakes?
The North American Great Lakes- Huron, Ontario, Michigan, Erie, and Superior- are so big that they border 8 states and contain 23 quadrillion liters of water. They span forest, grassland, and wetland habitats, supporting a region that's...