Although it does seem like it should work that way (where I teacher can respond while a student is working) I'm afraid it doesn't. Namely, the conversation/comments have to occur asynchronously where the student enters a comment and saves it before a teacher (or another student) can reply.
Hope that helps!
Steve, thanks for the information. Is there anyway it can be made to work? It seems that the way it is set up, the teacher and student must communicate either face to face during class, or at different time via the tool. It was my understanding that the comment section was designed so that the student and teacher could communicate during class.
Food for thought perhaps. :-)