Vision Learning
Visionlearning: General Science: Metric System: Metric and Scientific Notation
Instructional module focusing on the metric system. Discussion includes the historical development of the system and an explanation of base units. Site also includes an interactive practice quiz and links relating to the topic.
Other
National Physical Laboratory: The History of Length Measurement
This resource provides historic information on length measurement in the United Kingdom. Click on the topics on the left toolbar of the article to find out more information.
Smithsonian Institution
Smithsonian Learning Lab: What Is Currency? Lessons From Historic Africa
From the Smithsonian, this site offers lessons and resources on currency, its use (in the form of gold dust, salt, or metal objects) as an instrument of trade in historic Africa, and its requirements as an instrument of trade in the...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Colonial Africa, 1902
A map of Africa in 1902 showing the European colonial possessions established at the Berlin Conference in 1885, and the Turkish or Ottoman possession of Tripoli. This map shows major cities, rivers, and mountain systems, canals and head...
Curated OER
Etc: Maps Etc: Delta of the Ganges River, India, 1873
A map from 1873 of the Ganges River delta in what was at the time the Bengal province of British India. The map shows the main course of the Ganges River, the Hoogly and Hooringotta distributaries, and the Sunderbunds at the mouth of the...