The course aims to introduce students to the functioning of aggregate economies. The starting point is the analysis of the national account system based on a general equilibrium approach. The classical model of the economy and the quantitative money theory is then analyzed. Successively the long run dynamics of economic systems is analyzed using the Solow model and its extensions. A short introduction to Overlapping Generations model will be presented to shed some light on public debt issues. The attention is then turned to the financial markets and the role of speculative demand of money. The introduction of the speculative demand of money will allow to study of the economic systems in the short run according to the Hicks’s version of the Keynesian theory the IS-LM model. Afterward the analysis of the business cycle is accomplished using extensions of the Keynesian theory the AD-AS framework. The course text book is: “Macroeconomics” by Dornbusch, Fischer and Startz , edit. McGraw-Hill Extra material will be available during the course.