I made a "window" for him to use with his math problems. You can use one piece of cardboard if everything is uniform, or use two "L" shapes so you can adjust from large to small, etc.
I would put the problem he was working on in the "window" so he wasn't distracted by the other problems.
I found that "OLD" math books worked better because they weren't trying to be "entertaining". No pretty pictures and snappy comments or pullouts. No bright colors and "eye-catching" graphics. All of these served to distract my son so much, he could never finish in a reasonable amount of time.
Have you ever read any of Mel Levine's books? (I just recommended one in another thread and that made me think of it.)
A Mind at a Time, is one - and The Myth of Laziness is the other.
Typically dysgraphia doesn't exist in a vacuum - there are comorbid. These books might help you identify any other lurking differences.
Oh yeah, there's a website that helped me, too:
http://www.neurolearning.com/index.htm - I liked reading the "blog entries" - and if you email them a question, they'll usually answer it.