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 We mostly are cringe at the thought of a reading/discussing of theories. However, we need to do it; because theories are important to study of the related area. The case is the same for distance education (DE). But, why we need to theory? 
 Moore (1994) stated that “there was a need to describe and define the field and to identify the critical elements of the various forms of learning and teaching”. Similarly, Keegan (1995) said “… a theory gives the foundation on which the structures of need, purpose and administration can be erected”. He also added that “theory of distance education will be one which can provide ….which decisions can be taken, with confidence”.
 Keegan (1986) in his work The Foundation of Distance Education classified theories of DE into three groups as:
 1.Theories of independence and autonomy
   o 1960s-1970s
   o Rudolf Monfred Delling 
   o Charles A. Wedeneyer
   o Michael Moore
 2.Theories of industrialization of teaching
   o Otto Peters
 3.Theories of interaction and communication
   o Böje Holmberg
   o John A. Baoth
   o David Seward
   o Kevin C. Smith
   o John S. Danuel