Most of our course lecture videos include short quizzes that will allow you to test your understanding as you watch the lecture. When it's time for an in-video quiz, the lecture will pause, and you'll see a question and answer options on the screen. You can take your time answering the question, and re-start the lecture whenever you're ready to move on. After the quiz, the instructor will usually deliver a short explanation of the quiz solution.
In-video quizzes are not graded, and your performance will not affect your final grade in the course. These quizzes are intended purely as a learning tool.