Okay - so probably Primary 1A and 1B on their site for $9.00 would get DS6 started - and then if he leaps ahead much beyound Grade 1 level - we'll know to advance him faster? It's obvious he knows some Grade 1 math already and doesn't know other things on the school's curriculum for Grade 1 quite so well. Amazon seems to have these books too - and as I have to order other things like Spelling Workout A and B probably from there - I'm trying to figure out whether its better to save on shipping and order everything with the free shipping on Amazon - or still order the math from Singapore. Just found all the "edition" stuff confusing. Thanks for all the feedback!
