The late James Stewart received his M.S. from Stanford University and his Ph.D. from the University of Toronto. He conducted research at the University of London and was influenced by the famous mathematician, George Polya, at Stanford University. Dr. Stewart most recently served as a professor of mathematics at McMaster University and the University of Toronto. His research focused on harmonic analysis. Dr. Stewart authored the best-selling calculus textbook series, including CALCULUS, CALCULUS: EARLY TRANSCENDENTALS and CALCULUS: CONCEPTS AND CONTEXTS, as well as a series of successful precalculus texts and college algebra and trigonometry texts. Steve Kokoska received his undergraduate degree from Boston College and his M.S. and Ph.D. from the University of New Hampshire. He taught for 36 years and is now professor emeritus in the department of mathematical and digital sciences at Bloomsburg University. Dr. Kokoska has served as Chief Reader for the AP� calculus reading and as a member of the AP� Calculus Development Committee. He has been involved with calculus reform and the use of technology in the classroom for numerous years. He has written several technology supplements, an introductory statistics text and an AP� calculus text with Dr. Stewart. He has also given numerous presentations for the College Board and Texas Instruments, has presented workshops in China and Singapore, participated in several AP� calculus-focused webinar and has written and produced several calculus resources for Texas Instruments.