Answer:
The best way would be to read interesting stories, specially ones that most or all of the students like. What you can do is that you can ask the students what type of books they like, according to that, if 75% of people pick nonfiction, and 25% pick fiction, then do both of them, but make sure that no one is getting bored, do fun ones also. That will keep the kids on a good mode. Another trick is to take brakes when people want to do something for a small amount of time.
Thanks!