The International Environmental Education Programme (IEEP) of UNESCO has determined that the enhancement of the quality of the built environment is a basic priority for future environmental action, particularly in Europe and North America. This experimental teaching module applies specifically to those two continents, and is intended for use by elementary and secondary school teachers in clarifying certain essential scientific concepts while discussing the environmental problems of cities. The document provides some overall guidelines for teachers, along with a glossary of terms and a bibliography. The major portion of the manual consists of information and teaching activities which deal with: (1) people and the city; (2) growth patterns and land use; (3) transportation; (4) urban climate (including air quality); (5) water quality; (6) urban solid wastes; (7) city noise problems; (8) nature in the city; and (9) energy. For each of the above sections the teacher is provided with background information and a list of concepts to be taught. Several activities then follow, and for each of them the appropriate grade level is identified, along with the emphasis of the activity, amount of time required, materials needed, objectives, and procedures. Each section ends with a suggested objective test and the answers. (TW)