With more than five hours of video instruction, the Digital Video Companion CD-ROM is the ideal study companion. The CD-ROM is based on three solid educational principles: Motivation, Instruction, and Evaluation. Instruction is at the core of the Digital Video Companion, so each section of McKeague's texts are covered by a 5- to 10-minute video lesson. The problems worked during the video lesson are listed next to the viewing screen, so students can try working them in advance. A slider bar gives immediate access to any part of the video lesson. In order to help students evaluate their progress, each chapter of the Digital Video Companion contains a chapter text with answers. To further assist students, MathCue tutorial software is now integrated into the Digital Video Companion. MathCue Tutorial lets students practice with problems, then scores them and offers annotated, step-by-step solutions.