The Free, Web-Delivered, Patented (U.S. Patent No.
6,634,887)
Intelligent Tutoring System
For Tutoring Students In Writing Expressions
For Algebra Word Problems
That Has Tutored Thousands of Students!
written by Neil Heffernan
at Carnegie Mellon University
As seen in the National Council of Teachers of Mathematics News
Bulletin....
And Selected "Best of the Web" by these Teacher Sites




through a grant to 
Disclaimer: The opinions expressed in these web pages are not those of The National Science Foundation, The Spencer Foundation, Carnegie Mellon University or Carnegie Learning Inc.
Neil Heffernan.
Copyright 2000