Discussion Forums are made up of individual Discussion Threads.
Each Discussion Forum is typically a different topic. Each Discussion Thread is composed of individual posts.
You can subscribe to Forums and Threads.
You can START a new thread, which would be a new statement on the topic.
You can also REPLY to threads with your own thoughts on the topic.
Depending on how your instructor has set up the Discussion Board, you may be able to start a new Discussion Board thread, add a Discussion Board post, and reply to a Discussion Board thread.
Watch the following videos for more help with discussion boards:
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