Here is a terrific short video introduction to Islam from Andrew Mark Henry and Dr. Hussein Rashid. The video is part of Henry's series called Religion for Breakfast.
Henry and Rashid offer a methodology we can use to understand Islam and any religion. The methodology is that religions evolve over time, are internally diverse and are embedded in our culture.
This methodology helps us to understand, for example, that Islam is not a monolithic religion. Islam in Indonesia is not like Islam in Saudi Arabia.
This is an awesome introduction and the methodology will help students to understand the complexity of Islam and indeed all religions.