When it comes time to reviewing for a test, I have found that doing a walk-a-round activity is very helpful. I take their review and create a PowerPoint with each question on a slide. On the bottom right corner of the slide, I put the answer to one of the other questions. Students can work in pairs or on their own to work out the problems. I put the different slides around my room or we use the end hallway that has no classes in it. Students start at different slides and work out the problems. They then look to find the answer and then do that problem until they get back to their original question. Students like this because they are out of their seats and working with a partner. They seem to do more "studying" also and are more prepared to take the test.