This document provides an overview of production possibility curves (PPC) and opportunity costs. It begins by listing the key objectives which are to explain what a PPC is, discuss causes and consequences of a PPC shift, and how to draw and interpret a PPC. It then defines a PPC as illustrating the combinations of goods that can be produced by a single entity. The document discusses constant and increasing opportunity costs and what points are attainable, undesirable, or unattainable on a PPC. It lists factors that can cause a PPC shift such as changes in resources or technology. Finally, it includes sample questions about PPC curves and shifts.