Literary and historical context. The historical context -- The importance of The Wizard of Oz -- The critical reception -- A reading. The road to the Emerald City -- Dorothy opens the door: the inner landscape of Oz -- "Now we can cross the shifting sands": the outer landscape of Oz -- "Toto, I've a feeling we're not in Kansas anymore": the movie's Oz -- Appendix: Approaches to teaching The Wizard of Oz.