National Geographic
National Geographic: Measuring Distances on a Map
Activities will enhance students' understanding of how to read the map scale and apply it to measuring distances between locations.
BBC
Bbc: Bitesize Geography: Os Map Skills
A short tutorial on mapping tools and how to read maps. Covers features of maps, symbols, the compass, scale, distance, how height is represented, and grid references. Includes multiple-choice quiz at the end.