Other
Edte.ch: Maths Maps
Maths Maps is a collaborative project where participants use Google maps to choose a location within one of the cities highlighted, then create a Math problem about the site. The problems are marked on the map with various colors...
Library of Virginia
Virginia Memory: My County Tis of Thee: Counties of Virginia
A lesson in how to use historical maps to identify Virginia's counties and learn the political geography of Virginia.