The Navajo origin myth is discussed by comparing recorded versions of the story of Changing Woman and the Twins. The myth clarifies the significance of many present-day tribal ceremonies and customs and provides a basis for the traditional upbringing of the Navajo child. The Navajo defines wrong as "that which produces disharmony within society," and the basic precepts and injunctions against wrongdoing are contained in the mythology. Use of Navajo legends as instructional material promotes interest and motivation for learning in the Navajo child, just as an appreciation of Navajo mythology by the educator increases understanding of, and rapport with, his students. (JH)