For the Guiding Question, I anticipate a lot of answers that talk about the "hook" of an essay, because we just had that lesson. It's important that students form their own answers of what makes an essay successful, so they can live up to it.
The last part of the lesson has students filling out the Change Chart. Since they've seen how other students have written about the changes and the impacts of the changes, they should be invigorated with new ideas. This serves as their exit slip for the day.