In this paper, the author analyzed how students perceived social presence, cognitive presence, and
teaching presence when they experienced collaborative interactions in either through Kakao Talk-only or
Kakao Talk + face-to-face. The study utilized the 'educational community of inquiry' framework to analyze
the quality of students' collaborative interactions. The data were collected from 107 university students who
were enrolled in the 'Educational Evaluation' course. Two-independent Samples T-test was utilized to
compare the two groups' perceptions of social presence, cognitive presence, and teaching presence. The
results show that students perceived higher-levels of social presence and cognitive presence when they
participated in the blended educational community of inquiry through Kakao Talk and face-to-face
interactions. However, the perception of teaching presence has no statistical differences between the two
groups.