The problem now is that I've always been a year behind him curriculum wise. I look at RS D and think "wow conceptually he's got well over half this materal." But by going through it, he'll be solid in it. That's the part he hates. That's the price I paid listening to those who told me not to teach him math at home.
I don't know if it helps, but my DS6 is the same way. I did start afterschooling him at home right after I realized he was teaching himself 1st/2nd grade math. We're homeschoolers now, but still have problems with him making these huge conceptual leaps and then refusing to do the calculations to actually apply the knowledge. I also refuse to skip him through Singapore, even though he knows the concepts all the way through 2a/b (maybe further, I haven't really looked). I'm making him do it because understanding why we do math is completely different than knowing how to actually do it. They're both equally important and I think one without the other makes math useless.
