Nope, non-fiction. You'll be surprised what you can learn from a textbook in 20-minutes. The longer you talk the more information can come up.

Are they finished with the book in 20-minutes? Most of the time probably not. The point is even as beginners it's not necessary for them to spend 8-12 hours with a non-fiction book and get detailed informaion from it. A couple more activations and they can be done with the book in 1.5 hours and have even better comprehension of the information in the book than they usually have with traditional reading.

Alex