Sorry for the late reply, I've been away on Christmas Vacation.

One program I purchased was "Math Advantage" by Encore. It covers pre-algebra through Calculus. I forget what the other one was.

But, perhaps there some subjects that are better handled by computer-aided learning than others. I worked briefly for a firm that created programs to teach police about recent changes in the law. I do feel that this subject worked well with the computer. But law is, by its nature, a subject that is defined by its efforts to very carefully define concepts by words (sometimes by too-many words).

Joe Dunfee