This page lists the options for purchasing a textbook and online HW system. The textbook is University Physics, by Young and Freedman, 13th Edition, (Addison-Wesley, 2012.) You may use either volume 2 only (for PHY131 only), the full edition (for PHY121 and PHY131), or Y&F with Modern Physics (for PHY 121, 131, and 241, however your 241 instructor may choose not to use Y&F). Reading assignments are keyed to this textbook. At the bookstore, the textbook should come packaged with Mastering Physics. Mastering Physics is required. If you buy a used textbook, then you must buy Mastering Physics separately at the bookstore or online through our class Blackboard page; this is the only online place to pay for a Mastering Physics account for our class.