Thursday, December 30, 2010

An abandoned education method

I did not follow the topic lately, but I am pleasantly surprised to notice that Reform mathematics appears listed in wikipedia's "List of abandoned education methods" (as of November 2009). See also and Illustrating the spirit of the abandoned method, the following "mathematical" problem appears in a fifth-grade “Everyday Math” textbook (source: Fuzzy math: A nationwide epidemic):
A. If math were a color, it would be –, because –.
B. If it were a food, it would be –, because –.
C. If it were weather, it would be –, because –.

Fibonacci modulo m

An useful applet that computes the period of the Fibonacci sequence modulo m for m < 10000000 can be found here (part of Marc Renault's thesis).