Everything you need to understand or teach Ogre, Ogre by Piers Anthony.
Ogre, Ogre, like all of the books of the Xanth series, is a fantastic quest romance in which the main characters, only some of whom are human, encounter a series of adventures. While the adventures, mostly comic-heroic, are independent of each other, the internal quests of the principal characters structure the main action. For the halfnymph, half-human Tandy it is rescue from a demon who wishes to ravish her; for Smash, the ogre...