The article talks about the Math Worksheet Generator that's built on top of Microsoft's Math Engine. This tool help teachers devise new match problems for their students:

"Microsoft's Education Labs launched a new project this afternoon and it's better on trees and the environment. The group just announced a new Math Worksheet Generator where teachers can generate math problems and email them in paperless Word format to their students. In addition to Math Worksheet Generator, the group also announced plans for two additional projects to be released in the Fall …"

A demo video is available here.