I have used an amazing Web 2.0 tool that I find is really great. I would love to share this with everyone. It is a Web Quiz that I use as a pre-learning activity. The Web Quiz is self correcting similar to the way that these quizzes are in this unit. I have students take the quiz and they can take it as many times as they wish. They then submit a screen shot of their final quiz grade and receive this grade in the gradebook. I utilize this as a way of making sure students have essential background information for the unit. It also works well as an engagement piece. I use http://www.webwinder.com/quiz/index.php and make sure I use "multiple choice with references". I have also used this when developing integrated literacy based units for school districts.