Now, I'm not really complaining--after all, he's autistic and took more than a school year to learn to count past 15--but 12yo ds has been working on the 2+ addition facts literally all year. It took him all last year (and the first month of this school year) to become quick to answer the 0+ and 1+ facts orally or on paper. He so wants to move on to something more advanced and thinks he should be learning multiplication facts like his younger sister.
The problem is, when he practices the 2+ facts either on paper, orally, or by clicking on online flash cards, I still hear him counting "8, 9--it's 9" when he sees 2+7. He does that for all of them past 2+3 or maybe 2+4. I have heard it said many times not to move on until the math facts have been mastered. Now, I did teach the concept of subtraction when it came up in MEP Year 2 (I think it was Year 2; we dropped MEP for him a couple of months ago). He does understand the concept of subtraction, but again, he has to count back to find the answer anyway.
I'm wondering where we should go next. This may all "click" with him sometime soon, but if not, it will take soooo loooong to get all the way through to 10+10. How have any of you handled it when it seems like it will take until high school to get past addition? Of course, some special needs kids do not ever get past addition, but.....NOT going to think that way, NOT going there! After working for more than a year lining up cars, animals, whatever, and counting carefully "1....2....3...." and patiently correcting his mistake of saying "firteen" to stand for "thirteen" and then skipping "fourteen" altogether, he just suddenly counted all of his cars one day and stopped at 30-something simply because he ran out of cars! So, I just never know what to expect or when.