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Purple Math
Purplemath: Roman Numerals
Explains the basic rules for writing numbers in Roman-numeral format.
Other
Nova Roma: On Roman Numerals
This site from Nova Roma provides great information on Roman Numerals. The text is complete, and a Roman Numeral Calculator is provided to do basic arithmetic. An explanation is provided for each numeral.
University of St. Andrews (UK)
University of St. Andrews: Abu Yusuf Yaqub Ibn Ishaq Al Sabbah Al Kindi
Biography of Al-Kindi, an Islamic scholar and mathematician. Includes several links to related topics and a list of references for further studies.
University of St. Andrews (UK)
University of St. Andrews: Mac Tutor History of Mathematics Archive
The University of St. Andrews, Scotland, presents hundreds of biographies of famous mathematicians, histories of math in various cultures, and interesting facts on the development of important math concepts. This is a huge reference....
Other
Teachable Moment: Behind the Egyptian Uprising: A Strategic Youth Movement
This is primarily a lesson plan, but the reading from The Nation is important in gathering an understanding about how the Egyptian revolution of 2011 actually came to pass. Students can also consider the quotes from Gandhi that are...