Purchase option #1 - The access code available in the new textbook package purchased from one of the local ASU bookstores will provide you access to the e-text and Mastering course materials for PHY131. Purchase option #2 - Purchase the Mastering Access Kit from one of the local ASU bookstores and it will provide you access to the e-text and Mastering course materials for PHY131. Purchase option # 3 - Purchase the e-text option when registering and you will have access to the e-text and Mastering course materials for PHY131.