"Two Writing Teachers" is a blog created by, you guessed it, two writing teachers. It's interesting to learn what not only goes on in their classrooms, but in their thought processes. Ruth Ayres and Stace Shubitz met in March 2007 while attending a conference, and they have remained in contact every day since then, despite the 800 miles between them.
One of their blog entries disccusses a mathematical rubric writing assignment. Now that is writing across the curriculum!