Students can see assignment grades and feedback comments to assignments from the Grades link in the Course Administration block. However, to access the original submitted files, any feedback files with instructor markups, or teacher response files, students need to go to the assignment page and download the files from there.
Accessing graded assignments and feedback files
Find the appropriate assignment on the course homepage and click the assignment link.
Review your comments on the assignment page.
To download your submitted file(s) and/or separate feedback files, click the links to those files. There is no current way to download the grader feedback comments.