To help my students review for their final exam, I gave them a copy of the mid-term that covered our first semester's concepts, as well as a review packet for concepts we discussed 2nd semester. Originally I was going to have the answer key in class available to any students who wanted to check their work.  The packets weren't for a grade, just a resource for them.  A couple students suggested I put the answer key online, which is something I've done in the past. I pulled up Evernote and I'd used the document camera before, but I'd usually have…