Lessons  will walk you through content in a structured manner. Although these lessons are not graded, they are an important learning activity. Generally, within the lesson, you’ll find some brief content followed by a question. Select the answer you think is correct and click “Submit.” The page will refresh and at the bottom, it will show if your answer was correct and why or why not. If incorrect, we’ll suggest some additional readings to help you better understand the topic.

You can then move onto the next section by clicking “Continue” (or some similar text) at the bottom of the page. 

When you’ve reached the end of the lesson, you can return to the main course page.

Some lessons can only be completed once, whereas others permit you to attempt repeatedly. In most circumstances we’ve also included a progress bar so you know how far along you are in the lesson. If you are attempting the lesson for a second time, the progress bar will reset.