This intensive course in introductory micro/macro economics places emphasis on the fundamental principles necessary for success in International Economics (IPOL 8520), Development Economics (IPOL 8551) and Environmental & Natural Resource Economics (IPOL 8542). In the first part, Microeconomics, we examine the allocation of resources in different kinds of economies. Topics include the production possibilities curve, competitive markets, elasticities, monopoly, market failures, and the role of government. In the second part, Macroeconomics, we examine how the overall level of national economic activity is determined, including output, employment, and inflation. We explore the roles of monetary and fiscal policies in stabilizing the economy and promoting growth, with a focus on contemporary policy debates.