Register Your Serial Number
If you purchased Carbaugh Xtra! with your textbook from the bookstore, you must first register using the serial number on the Carbaugh Xtra! card that's bound into your book. This access serial number identifies you as a purchaser of Carbaugh Xtra!.
When you click on the link below, you will be asked first to enter your serial number and a new or existing user name. Take care to enter your serial number exactly as it appears on the card. The serial number looks something like this:
All serial numbers start with SC- and end with -CXTR. Make sure you type the dashes. In between the hyphens is an 8-character collection of letters and numbers. An "O" with a slash through it is a "zero".
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