“…Over the next few years I tried to elaborate, clarify, and explain these principles and to demonstrate their presence in other instructional design theories and models (Merrill, 2001a(Merrill, , 2002a(Merrill, , 2006a(Merrill, , 2006b(Merrill, , 2008(Merrill, , 2009. I also proposed a content-first alternative to the classic Analysis, Design, Development, Implementation, Evaluation (ADDIE) instructional design model called A Pebble-in-the-Pond approach to instructional development (Mendenhall et al, 2006;Merrill, 2002c.…”