Content Clock Graph: Visualizing Teaching Orchestration from Classroom Videos

Zixing Wang, Wei Liu, Danni Sun, Jing Xu, Wenqing Cheng

Abstract: Visualization for teaching orchestration is a research field of education. Recently, a number of works focus on a partial view such as behaviors or knowledge structure in classroom teaching videos and lack the description of the videos from multiple angles. Therefore, in this paper, we provide a panoramic view of the videos, in which education researchers can intuitively observe teachers' teaching strategies. The panoramic view, namely Content Clock Graph (CCG) is proposed to describe teachers' teaching activities by integrating the data from three dimensions of teaching content, teachers' behaviors and time sequence. In CCG, we take the teaching content as the core of this graph and describe the temporal distribution of behaviors when explaining different content. Besides, this graph has the function of explaining the special teaching phenomena. Experimental results show that we can analyze the organization of teaching content and the temporal distribution of teachers' behaviors from the CCGs of two teachers.