These teacher developed case studies taken from the business world are presented to help secondary students develop an understanding of economics and of the decision-making process. The studies describe real business situations. All historical and current facts are provided, and students must analyze the data and make business decisions. Teacher directions are provided for each of the 11 case studies. Some examples of the studies follow. One case study, entitled "Making It in Ireland," focuses on a computer company's need to decide where to locate a new assembly plant--within the United States of overseas. Students learn the importance of profit in corporate decision making and some of the effects that government and corporations have on each other. Another case study asks students to take into consideration the new 1980 regulations regarding the trucking industry. Students must propose a new marketing strategy to accommodate changing market conditions and plan new routes between terminals. The sociological and economic implications of the Master Charge Program of the New England Merchants National Bank are examined by students in one study. Another case, designed to help students recognize certain aspects of business such as cost, quality, and efficiency, asks students how they would handle the problem of wasted donuts at the Dunkin Donut University in Braintree, Massachusetts. The publication also contains a discussion of how to use the case method in business education. (Author/RM)