After missing a week of school I came back to find they had covered an entire topic.  I had no idea when to use specific problems or how to use them.  I had only a few days before we had the quiz.  For a few days I tried to figure out the problem for myself, but never could.  Once I asked Mr. Corner I still had difficulty figuring out and needed to just work through more and more problems until I understood it.  Here is one of the assignment I worked through.