I've actually done something similar. Sent him with a notebook of stuff to do that was doable, but challenging for him. It did help. but by school policy he still has to do what the other kids are doing first - THEN move on to other things, if he chooses to. Basically, he feels stupid counting dots and filling in the missing letters in words, and doesn't see the point in it. The other issue is that he wants to interact with the other kids - but feels a little left out when he's not doing what they're doing. Even though he despises what they are doing. That's the mind of a seven year old for you.
