Dear Students,
If you turned in a Forum assignment, but you can't mark it as complete (you can't get the green checkmark), then you haven't completed the assignment.
For most Forum assignments, I want you to interact with each other, so you can only mark the assignment "Complete" if you have posted and replied to 2 or three of your colleagues.
Think of the Forums as asynchronous discussions. I want to see your thoughtful work, but I also want to see you collaborate to help all of us learn. :)
Randall