My blogroll was getting a little long, so here's a few more links.
a math teacher living in the 21st century
Approaching Infinity
Explaining Mathematics
Figures Speak Mathematics
San Diego Math Tutor
iCoachMath - has lots of solved examples
Math Problem of the Day
How to Read Mathematics
misscalcul8
Sweeny Math
Musings of a Mthman
ThinkThankThunk
MeTA Musings
Learning is Life
Things I do
http://www.purplemath.com/modules/index.htm