This guide contains concept based lessons and activities in economics for use with students in grades 4-6. One component of a two-part publication, the guide demonstrates how the conceptual structure of the economics discipline presented in the first publication (ED 148 648) can be used to help students at the intermediate grade level make more effective economic decisions. By selecting lessons to supplement existing courses or texts, teachers will be able to upgrade the quantity and quality of economics instruction. The concepts taught are: scarcity, costs, property and economic systems, demand and supply, competition versus monopoly, money and banking, and inflation and deflation. Part One, which comprises about half of the publication, contains 16 classroom tested lessons. Most of the activities include group interaction and discussion, involving students in simulations and role playing situations. Each lesson contains a description of concepts to be taught, a rationale, objectives, specific teaching procedures, students materials, followup activities, and evaluation questions. Part two contains three units of study involving students in organizing a company, producing a product, and selling it to demanders; analyzing and critiquing economic commentaries made by political cartoonists; and building a town in the days of the Gold Rush. The third part of the guide describes an experience-based instructional system called Systems: The Mini-Society. In this activity students create their own society and make economic decisions the consequences of which affect their lives. (Author/RM)