I just began my third year of teaching, and while in many ways I feel much more comfortable with all the systems I've developed, I still haven't come up with a good way to review poor class tests/quizzes. Last week, I gave my 7th grade self-contained math classes a quick quiz on LCM, GCF, and simplifying fractions. The average score was about 60%. I'll continue to review the concepts in class of course, but I'm not sure how to handle handing it back. Should I hand it back, have them look over my comments, stick it in their data binders, and move on? Or do I go over the most frequently missed questions? Or should I have them do their own quiz corrections?