The third of the tenth grade sequence of the FICSS series (Focus on Inner City Social Studies -- see SO 008 271) examines the political and economic theories and realities of Communism as practiced in the Soviet Union. A brief introduction to Communist China is also included in the unit. The intent of the unit is to enable students to grasp many of the economic and political theories that have made Communism such a viable force in the twentieth century. In the unit, theory and practice are examined as two different elements, giving students an opportunity to determine the accuracy of both. The content of the unit includes an introduction to the unit; essential materials; knowledge, skill, and behavioral objectives; learning activities; and supplementary teacher and student resources. (Author/JR)