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What is Considered 'Blended Learning' in Higher Education?

This paper attempts to explore and critically compare the various definitions given to blended learning, primarily within the area of Higher Education. It starts with a general description of blended learning and its main characteristics, along with the reasons underlying its popularity and the criticism against it. The concepts of 'blended learning' and 'blended teaching' are compared and contrasted, while possible synonyms and various definitions are presented and analysed. Moreover, the absence of definitions in various papers is also commented, and, finally, opportunities for further research in the subject are identified.