National Council of Teachers of Mathematics
Nctm: Figure This: Can You Run as Fast as a Car?
During the 100 meter dash in the 1988 Olympic Games in Seoul, Florence Griffth-Joyner was timed at 0.91 seconds for 10 meters. At that speed, could she pass a car traveling 15 miles per hour in a school zone?
Curated OER
Etc: Maps Etc: Africa Before the Berlin Conference, 1882
A map of Africa as it was known in 1882 before the Berlin Conference of 1885, when the most powerful countries in Europe at the time convened to make their territorial claims on Africa and establish their colonial borders at the start of...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Central America, 1920
A map from 1920 of Central America showing political boundaries at the time, capitals and major cities, railroads, submarine telegraph cables, mountain systems, lakes, rivers, coastal features, banks or reefs, and the islands of Jamaica...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Central America, 1922
A map from 1922 of Central America showing political boundaries at the time, capitals and major cities, railroads, submarine telegraph cables, mountain systems, lakes, rivers, coastal features, banks or reefs, and the islands of Jamaica...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Central America, 1909
A map from 1909 of Central America showing political boundaries at the time, capitals and major cities, railroads, submarine telegraph cables, mountain systems, lakes, rivers, coastal features, banks or reefs, and the islands of Jamaica...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Central America, 1912
A black and white map from 1912 of Central America showing political boundaries at the time, capitals and major cities, railroads, submarine telegraph cables, mountain systems, lakes, rivers, coastal features, banks or reefs, and the...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Central America, 1914
A map from 1914 of Central America showing political boundaries at the time, capitals and major cities, railroads, steamship routes with distances between major ports given in nautical miles, submarine telegraph cables, mountain systems...
Curated OER
Etc: West Indies and Mexico, 1898 1906
A map of the West Indies and Mexico between 1898 and 1906, showing political boundaries at the time, capitals, major cities and ports, railroads and canals, rivers, terrain, islands, and coastal features of the region. Inset maps detail...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Panama Canal, 1920
A map from 1920 of the Panama Canal showing the Canal Zone boundaries, the channel route from Colon to the city of Panama, railroad route, lakes, reservoirs, locks, and towns along the canal. A chart at the top of the map shows the...
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