Divest yourself of that tired and false notion that you’re bad at math. That’s hooey, though it probably sets your self-expectations low enough that it damages your math performance. Don’t make it a self-fulfilling prophecy.
New Carnival on the block: Carnival of Mathematics at Alon Levy’s Abstract Nonsense. It’s got some good stuff there for math teachers, and I suspect people with other interests will find something of interest, too. For me, for example, there is the link to the post that Fisks arguments of some of the more unsuspecting intelligent design fogmeisters. More pure historians may like the history of algebra post. There’s a lot more history and controversy in a post about why students should study math at all:
Biographical history, as taught in our public schools, is still largely a history of boneheads: ridiculous kings and queens, paranoid political leaders, compulsive voyagers, ignorant generals—the flotsam and jetsam of historical currents. The men who radically altered history, the great scientists and mathematicians, are seldom mentioned, if at all.
—Martin Gardner
quoted by G. Simmons, Calculus Gems
(Take THAT you creators of state history standards!)
Hmmm. I’m teaching algebra and geometry this week (“go figure!”). I may use some of that stuff.
Millard Fillmore's Bathtub 
One of most remarkable exercises is to look at how prehistoric communities experimented with geometry, those interested in this fascinating topic, and how it may be used to enthuse students today may like to look at : http://sarsen56.wordpress.com/solve-this
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The problem is not just the teachers. It is also decisions by school boards. Here is an explanation of the disaster of some decisions.
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