Yes, module quizzes and mastery assignment quizzes are open-book and you may use any notes you have taken. However, you can not exit a quiz once you have started. If you back out of the quiz, all progress will be lost. In order to use your course as an open-book resource, you can open up a second browser window and view the material you need to reference for your quiz. Please refrain from logging into your account in two different devices. When this occurs you, will may be kicked out of the quiz and lose all progress made.