Exclusively from Cengage Learning, Enhanced WebAssign offers an extensive online program for math and science to encourage the practice that's so critical for concept mastery. The meticulously crafted pedagogy and exercises in our proven texts become even more effective in Enhanced WebAssign, supplemented by multimedia tutorial support and immediate feedback as students complete their assignments. Key features include: all of the end-of-chapter problems, Conceptual Questions, Master Its, Watch Its, Active Figures, Active Examples, Quick Quizzes, PHET Simulations, and Cengage YouBook.Cengage YouBook is a Flash-based eBook version of the text that is interactive and customizable! Fully integrated into Enhanced WebAssign, Cengage YouBook features a text edit tool that allows instructors to rewrite, delete, modify, or add to the textbook narrative as needed. Studying has never been more engaging and efficient with one-click access to a range of text content, plus search, highlighting, note-taking functions.