University of Calgary
European Voyages of Exploration: Geography and Cartography
This site provides information on mapmaking and cartograohy of the early explorers. Includes pictures of maps.
TeachEngineering
Teach Engineering: Sextant Solutions
The earliest explorers did not have computers or satellites to help them know their exact location. The most accurate tool developed was the sextant to determine latitude and longitude. In this activity, the sextant is introduced and...