Here's an interesting story of a girl in Michigan with Grapheme-Color Synesthesia. In other words, she visualizes each digit, zero through nine, as a different color.
For her, and others with the same condition, it adds a new splash to math work.
Incas
The Incas and certain other pre Columbian tribes in Peru developed the Decimal System hundreds of years before it was used in Europe.
http://www.skygaze.com/content/facts/math.shtml
In 594 AD decimal notation is used for numbers in India. This is the system on which our current notation is based.
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Quote Of The Day
"It should be evident that each step in my career has rested on a firm foundation in mathematics. For me, the study of mathematics was the key that opened the doors to the universe."
NASA Astronaut
Figures represent salary potential.
© BYU Mathematics Department 2009
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Mathematical Association of America