Raca, MirkoDillenbourg, Pierre2015-03-042015-03-042015-03-04201410.18608/jla.2014.13.16https://infoscience.epfl.ch/handle/20.500.14299/112102We present our efforts towards building an observational system for measuring classroom activity. The goal is to explore visual cues which can be acquired with a system of video-cameras and automatically processed to enrich the teachers' perception of their audience. The paper will give a brief overview of our methodology, explored features and current findings.classroomlearning analyticscomputer visionorchestrationtext::journal::journal article::research article