Packaged free with the text, Interactive e-Source with "Making the Grade" is a CD-ROM that includes an expanded version of the text with embedded website links, video clips, interactive chapter quizzes, a Learning Styles Assessment, and a Guide to Electronic Research. This remarkable CD-ROM intertwines the complete text with media resources and offers students a nonlinear approach to learning. With Interactive e-Source students can instantly explore various topics and concepts with an assortment of video clips (including footage of the text author in Singapore), website links, and interactive maps and graphs. Along the way, students can refer to an audio tutor for a helping hand with difficult topics. Students can also highlight the text and customize the content with electronic notes that can be shared with other e-Source users. Students can quiz themselves with interactive study questions for each chapter and assess their own learning styles.