All about "e": http://www.ualr.edu/~lasmoller/efacts.html
Descartes and the birth of analytic geometry: http://www.ualr.edu/~lasmoller/descartes.html
The invention of the equals sign: http://www.ualr.edu/~lasmoller/equals.html
The amazing history of pi: http://www.ualr.edu/~lasmoller/pi.html
John Napier and logarithms: http://www.ualr.edu/~lasmoller/napier.html
Pascal's triangle: http://www.ualr.edu/~lasmoller/pascalstriangle.html
Long multiplication in the Middle Ages: http://www.ualr.edu/~lasmoller/medievalmult.html
The history of matrices: http://www.ualr.edu/~lasmoller/matrices.html
The birth of trigonometry: http://www.ualr.edu/~lasmoller/trig.html
The history of the Pythagorean theorem: http://www.ualr.edu/~lasmoller/pythag.html
Al-Khwarizmi and algebra: http://www.ualr.edu/~lasmoller/aljabr.html
Newton and the binomial theorem: http://www.ualr.edu/~lasmoller/newton.html
The Fibonacci sequence and the golden mean http://www.ualr.edu/~lasmoller/fibonacci.html
Want to know more? http://www.ualr.edu/~lasmoller/moreinfo.html