Allen, M. & Sites, R. (2012). Leaving ADDIE for SAM: An Agile Model for Developing the Best Learning Experiences. New York: ASTD.
All who have trained in instructional design use some version of ADDIE (analyze-design-develop-implement-evaluate). It works, but tells us little about effective design. The authors – both experienced instructional designers – have developed a different approach which uses what they call the Successive Approximation Model (SAM). It is based on effective and established design principles and involves prototyping and agile development (the new term for rapid course development). Using a “savvy start”, prototypes are constantly developed and refined until all are satisfied that the program or course is robust and effective. You can read more about this approach here http://www.alleninteractions.com/sam-process. The key to this thinking is to do more quickly and develop design instincts.