Section 4.1 Reference Topics

History of Mathematics by Region:
http://aleph0.clarku.edu/~djoyce/mathhist/earth.html

Egyptian calculator:
http://www.eyelid.co.uk/calc.htm

Roman numeral calculator:
http:////www.guernsey.net/~sgibbs/roman.html

Cuneiform calculator:
http://it.stlawu.edu/~dmelvill/mesomath/calculator/scalc.html

Links to information on numeration systems:
http://mathforum.org/alejandre/numerals.html

Links