I don't know the book so I can't help with anything really specific but this article on teaching teenagers may have some interesting information for you:
Teaching Teenagers: How to Motivate and Interest Them
I find that teenagers are really a group apart. They won't appreciate being treated like children and they're not quite at ease in an adult role either so you really have to try and find the right balance.
I hope the article helps you out!
Louanne