Abstract
This study aims to analyze and visualize the research hotspots, evolution, and emerging trends of blended learning in a holistic way. In this study, 1657 biblio-metric records together with 48310 citations are collected from SCIE, SSCI and A&HCI databases. CiteSpace is adopted in the analysis and visualization. Results show: enhancing collaborative learning, pattern, and teacher training are the re-search hotspots in Period I, instructor perception, possible future direction, and research trend are the research hotspots in Period II, general science classroom, blended learning environment, and measuring student engagement are the re-search hotspots in Period III; the themes of covid-19 remain similar along the de-velopment, while the themes of digital health education change a lot; blended learning environment, online component, covid-19 pandemic, procrastinating be-havior, active blended learning, and observed learning orientation are the emerg-ing trends. These findings could provide research directions for future studies in blended learning.
Highlights
Blended learning has long been a hot discussed topic
The development of a discipline can be represented by its distribution of publication outputs; in other words, an increase in the number of publications shows an increase in the scientific knowledge [27]
By comparing the research topics in Period I (2003-2008), Period II (2009-2014) and Period III (2014-2020), we find the research topics changed a lot in these 3 periods
Summary
Blended learning has long been a hot discussed topic. The term lacks a unified definition [1]. A blended learning module consisted of “a textbook with a specially designed multimedia CD-ROM, face-to-face tutorials and online discussion” [2]. Speaking, blended learning is a combination of face-to-face instruction and online instruction [3,4,5]. As for the percentages of time occupied by faceto-face instruction and online instruction respectively, there is no consensus. Bernard thought 50% or more of total course time must be face-to-face [6]. Since the outbreak of COVID-19 pandemic, blended learning attracts more attention [7]
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