Two secondary social studies units, parts three and four of a series of four, contain classroom activities that help students recognize the role of superordinate goals in ethnic conflict. Objectives are to help students understand ethnic conflict within a nation in a political context and become aware of the common problems faced by ethnic groups of other nations. Each unit is a tightly sequenced series of activities that require teacher direction. In unit one, students first form two groups and create symbols and ways to maintain their group identity. Then, they play competitive games--tug-of-war and a fast recall quiz game--designed to further accentuate differences and create group conflict. In the third activity the two groups are equally threatened by "outsiders" and given an opportunity to temporarily transcend their unique group interests. Through a case study students compare their experiences from the first three activities with an experiment conducted in Oklahoma. The culminating activity in unit one is a game which involves students in playing the roles of members of ethnic groups and members of a national legislative body. In the second unit, students consider the implications of population growth for future immigration policy in the United States and sort out and rank, in order of importance, key characteristics of national minorities in the world today. (Author/RM)