With each chapter in our textbooks, there is a quiz associated with it. To take a quiz, click on any of the chapters listed on the left side of the page and you will see the quiz link there. See screenshot.
You can't retake a quiz. You can only take each quiz 1 time, so take your time and do your best. Note that there are only quizzes associated with the textbook chapters and that there are no quizzes for the case studies.