Mr. Donn's Pages has lesson plans on major religions including Islam. (Scroll down on the page)
Teaching 9/11 has elementary K-5 lesson plans as well as other grade levels
Teaching Tolerance has lesson plans for Confronting Islamophobia
(There is also an note on book burning, even through the scheduled book burning by a pastor in Florida has been cancelled, it may be a worthy classroom discussion. http://www.voanews.com/english/news/US-Church-Cancels-Quran-Burning-102571464.html)
Teachable Moment has a classroom discussion guide on theNew York City Community Center controversy.
Please reply with other useful sites!
See http://educationservicesnews.blogspot.com/2011/09/teaching-911-10-years-later.html and http://educationservicesnews.blogspot.com/2009/09/teaching-9ll.html
for more resources