Khan Academy
Khan Academy: Aggregate Demand and Aggregate Supply Curves
This article explains how the concepts of supply and demand can be applied to the economy as a whole. Includes examples of an aggregate demand curve and an aggregate supply curve, and review questions at the end.
Khan Academy
Khan Academy: Lesson Summary: Long Run Aggregate Supply
In this lesson summary review and remind yourself of the key terms and graphs related to the long-run aggregate supply curve and its relationship to the stock of resources, technology, and the natural rate of unemployment.