This review and pre-test is an excellent way to measure what your students know as opposed to what need to be taught. Excellent review. You could use this as a contest. I would always come up with a clever reward for the top three finishers. I would allow students to grade one another's papers. I did not use the sheet as a grade; I merely used it as a measure. Sometimes, though, I would eventually give this very same paper as the quiz. That way i could determine who paid attention when I discussed the answers.