Curated OER
Etc: Maps Etc: Physical Asia With Isotherms, 1916
A map from 1916 of Asia, showing physical features, general elevations, and mean isotherms for January and July. This map uses color-contours to show land elevations ranging from below sea level around the Caspian Sea to over 12000 feet,...
Curated OER
Educational Technology Clearinghouse: Maps Etc: River Basins of Asia, 1912
A map from 1912 showing the various drainage basins across the Asian region. This map is color-coded to show watersheds draining to the Pacific Ocean in pink, to the Indian Ocean in green, to the Arctic Ocean in purple and inland basins...
Curated OER
Etc: Maps Etc: Highlands of Northern France During Wwi, October 20, 1918
A map of the French-German front movement during World War I in the highlands of northern France. The dashed red line shows the furthest advance of the German Army. The red line with crosses is the Hindenburg line, a system of defenses...
Curated OER
Educational Technology Clearinghouse: Maps Etc: South America, 1906
A map from 1906 showing the general highlands and lowlands of South America and the national boundaries at the time. The map is color-coded to show highlands over 4000 feet above sea level in red tint, above 1000 feet in buff tint, and...
TED Talks
Ted: Ted Ed: Why Is Ketchup So Hard to Pour?
Ever go to pour ketchup on your fries and nothing comes out? Or the opposite happens, and your plate is suddenly swimming in a sea of red? George Zaidan describes the physics behind this frustrating phenomenon, explaining how ketchup and...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Land Elevations of Asia, 1906
A map from 1906 showing the general land elevations of Asia. This map is color-coded to show lands below sea level in purple, lowlands in green, areas above 1,000 feet above sea level in yellow-buff, and above 4,000 feet in red-buff. The...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Elevations of Africa, 1906
A map of the African continent showing general color-coded elevations, including areas below sea level in purple, lowlands in green, elevations above 1,000 feet in buff, and elevations over 4,000 feet in red. Political divisions of the...