Fig. 4From: The role of social network analysis as a learning analytics tool in online problem based learningThe tutor ego network compared to the whole network showing the tutor has interacted with a limited number of students. The node size was configured as degree centrality to reflect participants’ activity. The edges were configured so that the more frequent the interactions between two participants are, the thicker the line will be. The colour intensity reflects role in moderating interactionsBack to article page