Book excerpt: The Videos Resources are on DVD and available for download within MyMathLab. They include a video lecture for each section of the textbook and a Chapter Test Prep Video for all Posttest exercises for each chapter. The video lectures cover important definitions, procedures and concepts from the section by working through examples, and exercises from the textbook, and offer optional captioning in English. The Chapter Test Prep Videos show an instructor working through the complete solutions for all Posttest exercises for each chapter, and also contain vocabulary flashcards, an interactive Spanish glossary, and additional tips on improving time management.