Peter Boettke 
Living Economics [PDF ebook] 

A great supplemental text for the teaching of economics, this book offers a clear perspective and a passion for a deeper understanding of the subject. Economics is not merely a game to be played by clever professionals, but a discipline that touches upon the most pressing practical issues at any historical juncture. The wealth and poverty of nations is at stake; the length and quality of life turns on the economic conditions individuals find themselves living within. Touching upon a variety of subjects-including market socialism, political economy, and economics education-this reference contains the wisdom of an expert in the field.