At the bottom of Global Navigation, click the Help link.
The Ask Your Instructor a Question link allows you to contact an instructor or TA in any of your active courses directly from the help page.
Ask Your Instructor a Question
In the course drop-down menu , select the course that relates to your question. In the Message field , enter the message for your instructor(s).
When you’re done, click the Send Message button . Replies will be sent to your Conversations inbox. If your course includes more than one instructor or TA, your message will be sent as a group message to all instructors/TAs in the course.