You can participate in discussion in one of two ways: by posting a new thread to a discussion topic or by replying to a thread that a student or your instructor has posted. To keep track of new activity, you can also subscribe to a discussion and receive updates by email or text message immediately or as a daily email summary.
Being you will not be able to edit a discussion post after you submit, think about writing your response in a Word document, review it. When ready copy and paste your draft into the discussion thread or reply.
Once you have made a discussion post, you are not able to edit. Only your instructor has the ability to remove or edit an existing post. Contact your instructor if you wish to have your post edited or removed or to ask if you can correct your errors by replying to your own thread instead of removing it.