Most, if not all, of these resources involve short "writing-to-learn" activities that are geared toward the math classroom. Since math is entirely different from many other classrooms, these activities are simply supposed to reinforce learning, not take up valuable classroom time writing longer pieces that are not related to the content.
- Five Traits of Mathematical Writing
- Problem Solving and the SOLVE Method
- Implementing Writing in the Math Classroom - Extensive Handbook that suggests activities and strategies for writing in math.
- NumberFix - Great website created by math teachers for math teachers that focuses on writing in math class.