Concern for cross-cultural understanding and sensitivity to differences in people's values, assumptions, and modes of thought and feeling is growing in society, schools, and the foreign language department. In order for foreign language teachers to select what is worth teaching for the purposes they want to serve, they should make selections on the basis of student interest and the nature of the phenomenon to be grasped. Twenty types of techniques for achieving this purpose are described. The devices are grouped into those most useful for giving experience in a culture and those most valuable for developing knowledge about it. Sources that are useful to the teacher for getting materials are described and evaluated. The implications of the new social role for the foreign language teacher are discussed, particularly as they bear upon preservice and inservice education. A proposal is made for teacher participation in a collaborative effort to consolidate the knowledge needed in the pursuit of cross-cultural understanding. (SW)