Postive reinforcement is critical to the students learning. I agree that giving immediate feedback is critical. I know sometimes it is hard to keep up with all the paperwork as an instructor but the instructor must carefully review the test and be sure it will be graded and given back in a timely matter. I find that students anxiously want their test results sometimes given back immediately.I also think that using acronyms to help the students remember material works. I often let them make up the acronyms as a group and share them with the other students so the students have other suggestions from their classmates. It seems to work and the students have a lot of fun with it.