ClassFlow
Class Flow: Community Changes
[Free Registration/Login Required] This flipchart discusses basic community changes including changes in population, inventions, and transportation.
CK-12 Foundation
Ck 12: Life Science: Succession
[Free Registration/Login may be required to access all resource tools.] Ecosystems are "dynamic." This means that ecosystems change over time. Both natural forces and human actions cause ecosystems to change. Learn more about succession...
US Government Publishing Office
Ben's Guide to u.s. Government: Your Neighborhood (3 5)
Elementary site presents a colorful neighborhood. By clicking on the buildings, text appears to explain the services offered by the post office, fire station, police station, home, hospital, school, and library.