This comprehensive chapter-by-chapter companion to the textbook includes a wide variety of exercises to enhance learning and hold students' interest. Checklists for the textbook procedures allow for instructor or self-evaluation. Additional Learning Activities provide exercises that go beyond the textbook. New to this edition is a Competency Evaluation Review. Includes a variety of exercises to enhance learning. Checklists for the textbook procedures allow for instructor or self-evaluation. New to this edition is a Competency Evaluation Review section that will help students prepare for the certification exam.