Research On Feature Of TPACK Online Construction Based On COVID-19 Educator Help Desk

TPACK(Technological Pedagogical Content Knowledge)is an essential content structure of teachers’ professional development in the 21 st century.During large-scale online teaching caused by Covid-19,teachers all around the world have more urgent needs for TPACK learning and the professional development of TPACK goes online.TPACK online construction maybe the trend of teacher professional development in the post-epidemic era.This thesis explores the features of teachers’ online construction of TPACK in the context of large-scale online teaching.Based on the theory of knowledge online construction and online learning community,combined with TPACK framework,the analysis frameworks are constructed.Taking COVID-19 Educator Help Desk group as the object,content analysis and social network analysis are applied to explore knowledge domains,knowledge contexts,interaction feature and construction levels of TPACK online construction.Then,based on analysis of relevant factors of high-level TPACK,strategies for high-level TPACK online construction are proposed.This thesis founds that: First,as for TPACK knowledge domains,teachers have urgent and intense demand in TPK and TK as well as social and emotional aspects.the contents of TPACK teachers required in the large-scale online teaching context have changed,TPK is broader and TPK is more depending on teachers’ self-construction.Second,as for the knowledge contexts of TPACK,teachers’ TPACK is influenced by micro contexts which refers to teaching management,teaching as well as students’ feature,and medium contexts including parents and families,teacher communities,schools and regional institution.Medium contexts have exerted larger influences on teachers’ TPACK.Specifically,communities which teachers belong to empower teachers to develop TPACK,parents and families force teachers’ TPACK construction,and schools and regional institution give power to teachers’ self online construction.On the TPACK interaction feature,members engaged in form a sparse interactive network.Most of them are marginalized and passively participate in TPACK online construction.Opinion leaders from multi-subject collaboratively lead teachers’ online TPACK construction.The interaction and participation of teachers’ TPACK online construction is influenced by COVID-19 flu.On the level of TPACK online construction,meaning negotiation and sharing and comparison are the main with less in-depth processing and consensus-building stages.And it shows high and low differences with time.Based on study of factors related to the high-level online construction of TPACK including interaction behavior,interaction content,community culture,core members and social emotional interaction,strategies of teachers’ TPACK online construction in the post-epidemic era are as follows : Content of TPACK of online construction should be teacher-centered;Activities of should be contextualized to enpower teachers’ TPACK construction;community development should be enhanced to engage teachers’ participation in TPACK construction...