1. Go to Content.
2. Select the unit/lesson where you want to place a link to an Assignment/Discussion/Quiz 
3. Click on Add Existing

In the image above we have used an assignment as an example. Clicking on Discussion or Quiz displays a similar screen showing a list of discussion forums or quizzes.

5. Click on Assignment / Discussion / Quiz
6. Select the desired Assignment / Discussion / Quiz to place a link to it in the content.