I would like to be able to hit a button to snapshot particular columns in my grade book at certain points in my class. (For example, assignment groups or total grade). Typically when I am done with a batch of grading is when I would want to take the snapshot.
After taking a few snapshots I would then like to be able to see a trend of the students' overall grade in my class. This would enable me to identify students who are trending up or down so I can effectively intervene in their educational process.