This straightforward approach to dimensional analysis incorporates the simple to complex strategy while focusing on understanding how to problem solve. The Third Edition includes more practice problems, more case studies, and new features: Preventing Medication Errors and Solving Pediatric Problems. Pedagogy includes numerous exercises and actual drug labels throughout, as well as tear-out tests at the end of each chapter for faculty evaluation. A free CD-ROM containing more than 100 extra calculation problems is included with this edition. The ancillary package includes an Instructor’s Resource CD-ROM.