The methodology used in the evaluation of this unit is the same as that described in SO 000 468. Twenty-seven teachers were selected for the field trial thereby involving approximately 1,250 ninth through twelfth grade students. This unit has five integral activities and two optional ones: 1) Site Selection; 2) A Few American Cities; 3) Local Community Site Considerations; 4) Burges: The Fortunes of a Medieval City; 5) The Story of Portsville; 6) Time-Distance; and, 7) Models of City Form. Some of the specific conceptual objectives are an understanding of: the factors that influence the location and growth of urban settlements; the changing nature of these variables of location and growth; the factors that influence urban land uses; how a number of variables like population and income are likely to be distributed in an urban area; and, the decisions that must often be made with insufficient information. The unit test concerning the attainment of the unit objectives indicate a 10 to 18 per cent increase in understandings and skills. Two exceptions showed an increase of 53 and 3 per cent. The ratings on the effectiveness of the unit as a whole and the individual activities as to student and teacher interest, enjoyment, and student learning are given. A number of revisions are suggested for each activity. See SO 000 468 for a list of the related reports. (SBE)