Here is a good article on teaching kids to ride. Right now i’m struggling with getting my girls off their training wheels, but there are some good tips in here.  I’ve found that the training wheels while good for balance intially are actually hindering my girls age 4 and almost 6 from progressing past to the 2 wheel version. They have taken a couple nasty falls because they can travel fast in straight lines, but watch out when you want to take a corner! They are up higher and the wheels don’t allow the bike to lean enough to counter the momentum that they are producing and then whaamo they are in the bushes or on the sidewalk with scraped little knees and elbows.  These push bikes look cool, but as it says in the article, why not just take off the pedals and lower the seat of a normal bike?