  In this paper, we present HoloBoard, an interactive large-format
pseudo-holographic display system for lecture-based classes. With its unique
properties of immersive visual display and transparent screen, we designed and
implemented a rich set of novel interaction techniques like immersive
presentation, role-play, and lecturing behind the scene that is potentially
valuable for lecturing in class. We conducted a controlled experimental study
to compare a HoloBoard class with a normal class by measuring students'
learning outcomes and three dimensions of engagement (i.e., behavioral,
emotional, and cognitive engagement). We used pre-/post- knowledge tests and
multimodal learning analytics to measure students' learning outcomes and
learning experiences. Results indicated that the lecture-based class utilizing
HoloBoard lead to slightly better learning outcomes and a significantly higher
level of student engagement. Given the results, we discussed the impact of
HoloBoard as an immersive media in the classroom setting and suggest several
design implications for deploying HoloBoard in immersive teaching practices.
