2George J.Posener,Alan n.Rudnitsky:Coursea design-a guide to curriculum development for teachers (5th ed. ). An imprint of addison Wesley Longman,Inc. 1997:39-43.108-111.
3Goodlad, J. I..Planning and organizing for teaching.Washington,DC,National Education Association.1963.
4Keller,J.M..Motivational Design of Instruction.In Reigeluth,C.M.(ed.)Instruction Design Theories and Models,IEA, 1983.
