MATH ROCKS!!!!

Pure mathematics is the world's best game. It is more absorbing than chess, more of a gamble than poker, and lasts longer than Monopoly. It's free. It can be played anywhere - Archimedes did it in a bathtub.

-- Richard J. Trudeau, Dots and Lines


sábado, 28 de noviembre de 2009

miércoles, 25 de noviembre de 2009

viernes, 2 de octubre de 2009