Lorry,
Do your son like to play with older kids? Some gifted children do not like to play with others because they are smarter than the other kids the same ages. They usually have a lot of questions to ask and they seem to learn faster than the others which make them bored. However, I have seen smart kids like to hang out with adults or older kids because they can get different answers and point of views.
Also, if your son likes drawing, let him develop more on that. You can add more elements on it, says ask him to describe his feeling through drawing, draw pictures/ cards for other kids or relatives, link drawing with stories and music, teach other kids to draw, etc. Some gifted kids would have emotional problem as they have difficulties to express themselves and to deal with others. To help them out from that, you may want to spend some time with him and find a suitable stand for him amongst the other kids.
花旗太太生活在花旗國,留意時差,你問我未必即時答到。