Title:
How Many Ways Can We Define Online Learning? A Systematic Literature Review of Definitions of Online Learning (1988-2018)
Authors:
Vandana Singh and Alexander Thurman
Published:
American Journal of Distance Education, Volume 33, Issue 4, 1 October 2019 doi: 10.1080/08923647.2019.1663082
From the abstract:
"Online learning as a concept and as a keyword has consistently been a focus of education research for over two decades. In this paper, we present results from a systematic literature review for the definitions of online learning because the concept of online learning, though often defined, has a range of meanings attached to it."