AP® Economics courses are hard. Krugman’s Economics for the AP® Course, third edition was created to help you solve the economics puzzle. Assembled by AP® experts and divided into short modules, the organization, language, and emphasis perfectly mirrors College Board’s curriculum framework. This dedication to the AP® courses keeps teachers and students on track to realize success on the AP® exams. New_to_this_edition SaplingPlus is a new digital solution that combines LearningCurve adaptive quizzing with an integrated e-book, robust online homework, and access to all student and teacher resources in one accessible place.