Twelve lesson plans on economics of marketing are presented in this performance-based curriculum unit for distributive education. This unit is self-contained and consists of the following components: introduction (provides overview of unit content and describes why mastery of the objectives is important); performance objectives; and unit outline (table of contents, time required for the unit, and materials and resources needed). Lesson plans generally include student information sheets, assignment sheets, and teacher materials (e.g., transparency masters). Lesson plan topics include marketing concepts, key distribution activities, industrial and consumer markets, market segmentation, channels of distribution, types of distributive businesses, and consumer psychology. The unit also contains a post-assessment with answer key related to the enabling objectives and a unit evaluation (student develops a marketing strategy). (JH)