In this third grade teaching guide emphasis is placed on community study, providing data for generalizations about cultural diversity. Affective objectives foster curiosity and respect for cultural contributions and differences. Inquiry, critical thinking, geographic and sequential development of skills are stressed. Four resource units that focus on political and social institutions are on contrasting communities, gold mining, Manus Community in the Admiralty Islands, and the Paris community. The first part of the guide gives information on course goals, teaching strategies, the focus of the course, the place of the course in the elementary curriculum, the format of the units, adaptation of the units, and preparation of materials. Over half the document contains charts showing the sequential development of concepts and attitudinal behaviors in this course. Related documents are ED 051 027 through ED 051 034; and SO 005 391 through SO 005 396. (SJM)