To help the students review for their semester final, I divide the class into the number of units we have covered. Each group has about twenty-five minutes to prepare one overhead transparency with all of the most important information from the section. At the end of class, each group shares their overhead with the others. Every student gets a study guide to help them when they study at home and we all get to see many colorfully decorated pages! Afterward, I make a couple of classroom copies that students can check out if they were absent.