Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Americus Vespucius
Americus Vespucius was an explorer and navigator and was the first person to demonstrate that the New World was a fourth continent.
US Geological Survey
Usgs: Earth Surface Dynamics (Research Activities)
This site from USGS provides several activities to help understand the interrelationships among earth surface processes, ecological systems, and human activities. Also included are links to new findings and programs concerning Earth...