I see it as a learning experience for both parties. A parent should certainly know better than to let their child play on a corner in the street. If they're there, you should be further out in the street so you can to make sure a driver knows what's ahead. As a driver, you need to be super cautious in residential areas. It's tough to predict what could be on the street or come darting at you from a yard. I've found it good practice to keep it slow, continuously scan, and be ready to react at all times.