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  Instructional TV was used to supplement education in school.
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  Time sharing systems with mainframe computer was available in 1965.
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  Microcomputers were available in schools.(Roblyer & Doering, 2013)
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  The use of Internet has become widespreading (Entrekin, 2015).
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  Web 2.0 applicatons via the Internet advanced from a static to an interactive dynamic environment.
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  Mobile technology gains popularity with the emergence of mobile device such as iPad, iPhone, Android, etc.
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  Cloud based applications can replace costly on-site servers. The emergence of MOOCs (Massive Open Online Courses) opened new opportunites for learners to participate and gain knowledge online (Adair et al., 2014).
