If you have submitted an assignment but realize that you need to make changes to it, you can check if the instructor has enabled the system to allow you to resubmit before the deadline. You will find out either by asking to the instructor, or it will be indicated by an icon in the top right corner of your assignment screen.
This is how you take back the assignment to resubmit:
1. Open the link of the submitted assignment by clicking on its name
2. Click on the top right icon and edit the assignment
For more details watch the step by step instructions following the link "Read the complete post..."
This movie show step by step instructions on how to resubmit an assignment:
Print the text of this Tutorial