The e-books we offer are created using the EduCAD-ST tool from

We select the problems from each book by looking at the Problem Types in the Matrix, and then run multiple problems to locate ones that will challenge the student. We then group three problems of a Problem Type together so that the student has the chance to make errors and then learn from them in the Socratic Dialog for that specific problem.

The books are then published with TWO goals in mind. The first is to introduce the toolset and what it can do to a larger audience. The second is to provide a student with an off-line tool that will help them learn the math that they need to know in order to excel at solving problems of that Problem Type.