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De estudiantes a profesionales, de jovensuelos a padres de familia.  El tiempo transcurre rápidamente, por eso en esta sección  colocaremos algunos antes y después...

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This is a page where I can broaden the context of a discussion and offer motivated students advanced material.

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African Mathematics

There is evidence to suggest that African Mathematics began more than 8000 years ago. A carved bone dating from between 9000 BC and 6500 BC was found at Ishango in Zaire. The markings indicate that these prehistoric people used a base-10 number system (just like we do) and were familiar with prime numbers and the operation of multiplying by 2. A series of notches on the Ishango bone appear to approximate a lunar calendar, suggesting a fairly sophisticated knowledge of astronomy.

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Related Links

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In this area I might include links with more information on subjects we've discussed in class.

For example, this site offers the history of word meanings:

www.oed.com

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Be sure to send me suggestions for the next In Depth segment.