Virtual Villagers Tips & Tricks, Walkthroughs, Guides, Hints and HelpLast Day of Work Official Forums: Virtual Families, Virtual Villagers, Fish Tycoon
children can heal people if you tell them to, but they won't do it on their own. so yeah, i think there are only four things that a child can do: herbs, mushrooms, collectibles, and healing (if told to).
but if the child is a chief, then he/she can gather firewood and brush, and other things that the chief can do.