On your Course Site, under the Control Panel, click Grade Center, and then click Full Grade Center.
Point to a grade, and then click the Contextual Menu (the gray circle with a white chevron.)
From the Options menu, click View Grade Details.
You will see the Grade Details screen. When viewing grade details, you can see feedback you have left for the student, grading notes, and the user's activity related to the grade (blog post, new wiki entry, etc).