Circular Flow

The Circular Flow Model of a Market Economy

By this point in your course you may have learned the definition of a market: A place where buyers and sellers meet to engage in mutually beneficial exchanges. But what is a market economy? Two basic types of markets exist in any market economy: resource markets and product markets. The exchanges that take place in these markets benefit …

Increasing Opportunity Cost

The Law of Increasing Opportunity Cost and the PPC Model

In a previous lesson we introduced the basic economic concepts of scarcity, opportunity cost, and the production possibilities curve (PPC). In that lesson, we examined the tradeoffs an individual faces in the use of her time between “work” and “play”. We showed that the opportunity cost of one hour of work is always the one hour …