Read these lecture notes, which will provide an introduction to the scope and major topics covered by a course in macroeconomics. You will gain a solid foundation on which the upcoming
units build. For instance, the course will refer numerous times to the four components of the expenditure approach – consumption, investment, government, and net exports – and will elaborate on their causes and consequences, what variables alter them,
and what effects they have on aggregate demand, aggregate supply, GDP, and so forth.