This project developed a conceptually structured program, emphasizing the interdependence relationship that exists within urban centers and between urban centers of Canada and the world, as a curriculum proposal intended to focus student attention on man's behavior in the increasingly multi-dimensional social system in which he lives. Utilizing developed criteria for the selection of concepts and recognizing the skill requirements for concept teaching, six units were developed, forming a conceptual hierarchy: Concepts of 1) Nuclear Groups, 2) Neighborhood Community, 3) Urban Community, 4) Regional, 5) National, and 6) International Interdependence. Units are intended for ages nine through twelve, are to be taught sequentially, and require 2-3 weeks per unit. Objectives from the cognitive and affective domain, along with intellectual and social skills, are considered in structuring the instrumental content, placing greater emphasis on teaching for cognitive outcomes. Intended learning outcomes are not stated in behavioral terms. Suggested instrumental content, activities, and materials are described in the appendix. "A Conceptual Framework for the Social Studies in Wisconsin Schools," Madison, Wisconsin, December, 1964, provided the team with ideas that helped develop the basic concept of interdependence. Rrlated documents are ED 055 011-020. (JMB)