My DS is 4 in a coup,e of months and attends nursery 2 days a week, every time I pick him up he is playing on his own. With other children around him but playing with the giraffe, tractor, lego etc on his own. When I look it does look like most of the children are either playing on their own or maybe with just one other.
What are you 3.5 yr olds like? do they have best friend? Do they run in too see their friend?