This lesson plan was developed through "Economics International," an international program to help build economic education infrastructures in the emerging market economies. It provides a lesson description; appropriate age level; economic concepts; content standards and benchmarks; related subject areas; instructional objectives; time required for lesson completion; materials needed; a detailed step-by-step procedure for classroom implementation; closure questions; assessment exercises; and extension exercises. The lesson also contains a visual and three activity sheets. The lesson explores how gross domestic product (GDP) is determined and discusses its major components. (BT)