I find the Jin H. Choi books to be pretty awful. Some lessons can be decent, but other sections leave me wondering what grammar points/lexis they are trying to teach.
I usually stay on a chapter for 3 weeks. The first and second week concentrate on the 2 Listening/Talking sections with the last week being for review. For a class, I open up with a riddle, or some kind of word game, then I usually do the first and second listening parts, bust out a .ppt to reiterate some key phrases, and finally do some sort of game. My main coteacher wanted me to do the listening and talking, so I'm stuck with that format for now.