Local students submit homework in the folders I provide. After I grade the papers, I post the grade and any comments on Thinkwave. The student can review them and make any needed corrections to the current assignment he is working on. The folder with the graded paper is returned at the next class.
Online students turn homework in on Thinkwave, the academic site I use. I review, mark, and grade each assignment and then post the graded copy to Thinkwave. The student can then review the graded copy and incorporate any corrections in the current assignment.