Az 1- Don't let the legos fool you. My son with hypotonia and gross and fine motor delays was able to manipulate them without trouble. Legos are not physically demanding toys. Watch how he holds a pencil and observe if he appears tired after copying a page vs. writing a page. Does he have an odd grip? Can he write neatly when copying, but not when composing an essay? This might indicate an attention problem rather than a physical one.

I agree with Eema- ADD will show itself at home as well as in school.

I'd suggest that you take your concerns and observations to your pediatrician and see if a referral is warranted. ADD and motor issues need completely different specialists, of course, so be as specific as possible when documenting problems.

I'm hoping that you'll monitor for a few days and decide that your son doesn't really have a significant issue. If you do identify possible problems, keep looking until you find an answer that makes sense to you.

good luck!