Help Students Get Extra Practice Hundreds of new, challenging problems. Using the 1, 2, 3, 4-dot system to distinguish level of difficulty for each problem (1 being the easiest and 4 the most difficult), this text provides even more opportunity for students to challenge their knowledge and enhance their skills. The hundreds of new problems found in this edition also allow professors additional options when it comes to assigning homework based on a difficulty-level that’s appropriate for their students. Capturing the Essence of the Material: Rapid Reviews. In order to help students study and learn the concepts more effectively, this text now includes a two-page Rapid Review at the end of each chapter and supplement. This detailed, yet concise, summary of the main points and equations in the chapter helps students prepare for homework, exams, and lectures. The Rapid Reviews also include key chapter terms and a self-test, with questions linked to the learning objectives in the chapter.   Key Coverage of Important Topics Integrating Ethics: An Ethical Dilemma featured in every chapter. This revision includes broad coverage of ethics as applied to operations management. The topic is addressed in most chapters and an Ethical Dilemma feature that appears at the end of each chapter, which can be used for classroom discussion or homework. Highlighting the Significance: Author Comments. To help students better understand key information and concepts, the authors have included Author Comments where they point out why a section, figure, or table is important.