Having taught my 3 kids, I found that one of them needed a very different approach. The first two were very receptive to the techniques listed above. They were concerned about riding, doing it right and making me proud. The last one didn't want that. He just wanted to spend time with me. After tried and true methods didn't work, I came to the realization that I had the wrong goal with him. Here is my advise..... Make sure your mind is on you and your son, not anywhere else. Don't be concerned about getting done so you can get somewhere. Make the goal to have fun today, not become an accomplished rider today. If the two of you go out and have fun, he will make more progress on the bike more quickly. This one will remember the time you spend together learning how to ride for the rest of his life. How do you want him to remember it? Do some stupid stuff that we did as kids. How far will this bike go with no one on it before it falls with a good push? You don't get this time back. Don't blow it.