Hoffman, John S. Instructional design-step by step : nine easy steps for designing lean, effective, and motivational instruction / John S. Hoffman. - Bloomington, Ind. : iUniverse, c2013. - 551 p. : ill. Includes bibliographical references and index ISBN: 9781475986716 Subjects--Topical Terms: Instructional systems--DesignComputer-assisted instruction LC Class. No.: LB1028.38 / H633I 2013