Broadly applicable. Extraordinarily useful. Refreshingly intuitive. Betsey Stevenson and Justin Wolfers present a new synthesis of economic principles for a new generation of students. Their focus on useful economics employs compelling explanations and real-life examples to help students develop economic intuition and apply it to everyday decisions. The authors provide a fresh take on a wide range of principles topics and develop macroeconomics from its microfoundations in an engaging presentation that has drawn enthusiastic reviews from hundreds of instructors and thousands of students in pre-publication class tests. The new edition of Principles of Macroeconomics is available with Achieve, a new, integrated online learning system that features powerful tools for each step of the Learning Path: pre-class, in-class, and post-class.