First Principles of Instruction, created by M. David Merrill, Professor Emeritus at Utah State University, is an instructional theory based on a broad review of many instructional models and theories. First Principles of Instruction are created with the goal of establishing a set of principles upon which all instructional theories and models are in general agreement, and several authors acknowledge the fundamental nature of these principles. These principles can be used to assist teachers, trainers and instructional designers in developing research-based instructional materials in a manner that is likely to produce positive student learning gains.