Your textbook has a companion web site that includes video clips, practice multiple choice quizzes, flashcards to test your knowledge of the vocabulary, and links to relevant web sites.
 

If you missed any of the lectures, they are now available on video in the library. Go to the audio/visual desk on the fifth floor. They must be watched on the library's machines. Click here to see what topics are on each tape. Chapter references on the videos refer to the fifth edition.

Even Exercise Answers (8th edition and custom edition)
Even Exercise Answers (7th edition)