If you're not familiar with David Merrill's First Principles of Instruction, I suggest that you check out this classic post from Dr. Joel Gardner. In this post you will find links to two great research articles on applying the First Principles of Instruction.
Joel has been involved with teaching and learning for over a decade, and is currently Program Chair of the Instructional Design and Performance Technology Program at Franklin University. I had the pleasure of working with Dr. Gardner at the Faculty Assistance Center for Teaching (FACT) for a few years, and he co-authored the original article on the OAR model with Tae Jeon and myself.