Curated OER
Photograph: A 17th Century Astrolabe Found Near Cobden, Ontario
A look at mapmaking during the time of the explorers. The site profiles various mapmaking tools and the history of mapmaking from the 16th to the 18th century.
Curated OER
How Accurately Did They Know the World in 1516?
This is a great site to read about how navigation began in Europe and what tools were used. Make sure to read the segments on coastal navigation, maps, and ocean currents.