Lines and Lines of Tangency

...for WordPress, mostly because I'm tired of cutting and pasting Latex into a math blog.  Anyway, to the threes upon threes of regular ...

So for the past few months I've been telling my kids that, every time they write (x + y) 2 = x 2 + y 2 , they kill a puppy.  In fact,...

It's going to be a bit of a strange year for Friday the 13ths.  First of all, there will be three of them.  Now that's not especiall...

Myself and (then) SSgt Clark doing some math in Fallujah, Iraq. I used to be an artillery officer in the Marine Corps, and it's ...

Thanks to the book Group Theory in the Bedroom , by Brian Hayes, I finally found someone to blame for my geometry students' daily growin...

In my last post we considered the question of whether Double Stuf Oreos actually live up to their name, creme-wise.  Chris Danielson and I ...

First, New Year's Resolution = more blog posts.  In that spirit... A few days ago, teacher of math teachers and all-around math dude C...