“…At present, researchers have been utilizing eye‐trackers , cameras , and wearable devices presented in the instrument dimension to generate multimodal data highlighted in the data dimension . Using these devices, researchers can collect data such as heart rate , gaze , electrophysiological activity of the brain , or facial expressions data , to study and model learning strategies (Mangaroska et al, 2018; Worsley & Blikstein, 2015), to predict high‐level constructs such as learner attention and engagement (Chan et al, 2020), to design multimodal learning interfaces (Echeverria et al, 2019), or to generate insights about teaching at a more fine‐grained levels (Martinez‐Maldonado, Echeverria, et al, 2020; Martinez‐Maldonado, Schulte, et al, 2020; Prieto et al, 2018).…”