Okay... since "The Joy of Mathematics" has worked so well for us, I decided to get two more: "Highschool Level Geometry" (to work on as soon as DS8 finishes Algebra 1) and "Joy of Science". WIth the sale and two coupon codes I got from this thread (thanks everyone!!) the purchase will be $94.90 instead of $870.

I'm especially excited about the science DVDs, as I am wondering if I can accelerate DS8's science to catch up to his math level. Although he jumped up to highschool math easily, I'm not sure if he's ready at this point to jump up from 3rd grade science to highschool science. I'm hoping these DVDs will get him ready for for highschool science in 4th grade.