Before those first drafts start pouring in, I want to share an article a colleague recently passed on to me discussing plagiarism and the use of plagiarism-detection software. I found it thought-provoking, and it renewed my belief in multiple drafts. I used the piece in an activity in my argument class, and it sparked a lively debate (mostly between me and the students). I welcome your thoughts/ideas about dealing with plagiarism in your own classroom.
Additionally, if you're looking for further resources for talking to students about plagiarism, (and while our website resource library is still under construction) the Purdue Writing Center website has some nice activities you might borrow.