Brian,
I agree that starting with something positive even if it is "Thank you for submitting your work on time." or "I see improvement in your work from your last assignment." is a great thing. You want your feedback to be personal (as you said individualized) because each student may need help in different areas.
I like the idea of a 2x2 matrix. Also, it is very helpful if the students are involved in peer assessment and provide feedback to each other. Sometimes when students hear feedback from several sources, they feel that it is more helpful especially if they… >>>