This page lists the options for purchasing a textbook and online HW system. THE LOOSELEAF EDITION OF OUR TEXTBOOK IS STRONGLY RECOMMENDED. Please see the instructions in the following paragraph. Thanks. GBA For our active-learning class, you will be required to read our textbook. THERE ARE NO LECTURES, so the textbook will be your primary source of factual information. For our class, I strongly recommend that you purchase the Looseleaf Edition (or "unbound edition") of Young and Freedman 15th edition; this is INSTEAD of any possible hardbound edition of the text. THE RECOMMENDED LOOSELEAF EDITION CANNOT BE PURCHASED FROM THE BOOKSTORE. Instead, begin by going to our class Canvas page and follow the instructions on our class webpage to establish, and pay for, your Mastering Physics account for our class. BE SURE TO SELECT THE MP ACCOUNT WITH ETEXT. Once you are inside your MP account for our class, then select "eText" from the menu on the left-hand border. The resulting eText page then gives you the opportunity to purchase the unbound edition for $45 with free ground shipping. The free shipping may take two weeks, so purchase your looseleaf edition as soon as possible. Until it arrives, just read from the etext provided by MP. Once your looseleaf edition arrives, I suggest putting it into three separate 3-ring binders, one for Mechanics (121), one for E&M (131), and one for Thermodynamics and Modern Physics. I also suggest that you get a small 3-ring binder, suitable for one chapter at a time. Bring this small binder with you to class, and make notes in the margins when questions that you have about the reading are answered during our class discussions. Thanks much. GBA Note: when you register for your Mastering Physics account, be sure to select Mastering Physics with Etext; you will then get a copy of the etext for the 15th edition of Young and Freedman. If you are content with reading on a screen only, then the electronic version of the text is sufficient for our class. However, as noted in the paragraph above, I strongly recommend the looseleaf hard-copy text in which you can make notes in the margins; you can then keep this copy as a physics reference book. The textbook is University Physics, by Young and Freedman, 15th Edition, (Addison-Wesley, 2020.) If you wish to have a hardbound edition of the book, then you may use either volume 1 only (for PHY121 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 Canvas page; this is the only online place to pay for a Mastering Physics account for our class.