Exit slips are an easy and quick assessment tool! Write your question/problem on it and have students answer it at the end of class or at the end of the day. With a quick sweep through all of the slips, you easily see who grasps the concept and who needs reteaching. Great to see who understood a concept that day/week or also fantastic for spiral review! The possibilities are endless!
How I use it:
Since I am a classroom teacher, I use these at the end of the school day. I write 4 questions/problems (one on each box) and copy it. I use those for the week. I go over the concept with students who answered incorrectly the next school day. These are such an easy assessment tool!