Try local colleges. If they have an education program, they may have to do "hours" in different settings. I did for my degree. It's worth a shot.
Try using something your ds likes. M and m s, skittles, pretzles, Orange slices, grapes, etc. The tangible combined with the edible sometimes helps get over that math hurdle. If I have 1 m&m and you eat it, how many are left?
Hope this helps.