Many of us use the Fisher Equation: Real interest rate = Nominal interest rate - Inflation rate. Many more of us don't know that Fisher was thinking about a specific market.
This article in the October issue of Monetary Trends by the Federal Reserve Bank of St. Louis provides some historical context. But more importantly, it puts the equation into current context by providing another view of the complex challenge the Fed faces as it deals with a slow economy coupled with the possibility of renewed inflationary pressure. I strongly recommend it for that section on monetary policy in your macro sections.
And share your thoughts. Is this usable with your classes? Or too "high-end"?