The biggest problem seems to be that they spend a helluva lot of time on math instruction, but not very much time actually doing the math. For anything through

The biggest problem seems to be that they spend a helluva lot of time on math instruction, but not very much time actually doing the math. For anything through AP calculus, you'd be better served going down the volume and spaced repetition route that math programs like Saxon use. Do things over, and over, and over, and over again until they are second nature. There's no magic bullet to get around that work that you have to do to master something.