by Davo Smith.
Click to grade a student's work (or, for the student, click to view the assignment).
Scroll down and open up the 'history' section at the bottom.
There is a list of all the submissions, including the files the students submitted and all feedback that was given (that's the whole point of the resubmission system - to preserve the history of the submissions + responses).
There's a couple of screenshots of this process here:
http://www.synergy-learning.com/moodle-2-5-improvements-assignment-resubmissions/