My kids LOVE to debate each other. It's always been a wonderful way to start a novel and get the kids talking about what we're reading and thinking about how the topics relate to them.
I created this PowerPoint with several "agree" or "disagree" questions that provoke discussion specifically for Sherman Alexie's The Absolutely True Diary of a Part-Time Indian, though it could be used for a Native American unit.
I put each question on the screen and have a show of hands tell me who agrees and then disagrees. I then allow for both sides to plead their case. My students end up talking about it long after class is over.