E-Text!
This is an exciting student resource that combines McGraw-Hill print, media, study, and web-based materials into one easy-to-use CD-ROM. This CD-ROM provides cutting-edge technology that accommodates all learning styles, and works as a complement to the printed text. The CD provides a truly non-linear experience by utilizing video, art, web-based, and other course materials to help students organize their study materials. Animations on the CD help students visualize important concepts: Projectile Motion, Planetary Motion, Electromagnetic Induction, Nuclear Chain Reaction, and more!

Online Learning Center

• For Instructors: This text-specific Web site includes the fully downloadable Instructor's Manual/Test Item File, a powerpoint presentation of figures from the text that can be integrated into your own lecture, web links, an Ask the Author message board, and many other features. Additionally, instructors can gain access to the Online Learning Center which contains many other features that can be pulled into PageOut, McGraw-Hill's solution for helping instructors create their own web pages. PageOut offers a series of templates. Simply fill them with your course information and click on one of 16 designs. The process takes under an hour and leaves you with a professionally designed Web site. PageOut is so easy and intuitive, it's little wonder why over 5,000 of your colleagues are using it.

• For Students: Students can use our Web site to study! It contains scorable practice quizzes, crossword puzzles using key terms and definitions from the text, as well as a career center and web links. Accessing the Online Learning Center will allow the student to use flashcards, take additional self-assessment quizzes, and utilize the online glossary. For students wanting additional help, they can post a message to the "Ask the Author" message board, which is mediated by the authors. Check it out today-new features are always being added!

Conceptual Questions
We have modified and slightly expanded the list of carefully worded conceptual questions found at the end of each chapter that were also considered a strong feature of earlier editions. These questions call for a short objective response regarding the direction, relative size, or existence of some effect, followed by a brief written explanation of that response. If these questions are made an integral part of the course, they can help students understand the key concepts more clearly than is the case with the more open-ended questions often found in other books.

Numerical Exercises and Challenge Problems
In the third edition, we have modified and expanded the simple numerical exercises and the somewhat more involved challenge problems found at the end of each chapter. The numerical exercises are useful in helping students get a feeling for the quantities involved and for performing simple computations involving physical concepts. The challenge problems are designed to provide students who are more comfortable with quantitative ideas an opportunity to explore these ideas in more depth.

Home Experiments and Observations
Since many courses for non-science majors do not have a laboratory component, we have continued to develop the home experiments and observations found at the end of each chapter. The spirit of the these home experiments is to enable students to explore the behavior of physical phenomena using easily available rulers, string, paper clips, balls, toy cars, flashlight batteries, and so on. Many instructors have found them useful for putting students into the exploratory and observational frame of mind that is important to scientific thinking. This is certainly one of our objectives in developing scientific literacy.