Here are my Great Gatsby files--almost all of them. In this zip containing 50+ documents, you'll find discussion and quiz questions for every chapter, activity plans, paper assignments, literary criticism, even artwork (for the El Greco reference in Chapter 9)! I've got everything you need to produce a deep, meaningful unit for your students.
As with all of my unit plans, I do not lay out for you specifically how to teach the unit step-by-step, though in this case a few of the documents do have schedules. Instead, I give you all of my resources--and they are extensive here--and you pick and choose what works for you, in the manner that suits your style and your students best. Having said that, you'll find everything you could possibly need here: activities, quizzes, paper assignments (expository and creative), pre-reading activities, literary criticism, etc. Explore and be creative! Let me know what you come up with.