More important, how old is he?
if he's really young it will be a challenge to keep him occupied while waiting for a strike.
If he's in grade school or older then jigging would be a good choice.
The key with kids and fishing is to let them develop the love of fishing on their own, and don't force it on them.
When I took my nieces and nephews fishing when they were much younger I would let them set the pace.
When they got tired of fishing I would either let them do what they wanted to (within safe reasoning) or I would take them home.
Most had enough fun to last a few hours, particularly when jigging was productive.
Who knows, you could have him jigging perch or sunfish and he could lure in a large predator? (I've had it happen quite often)
Good luck!
