Token, carrot, or just in the way? The challenge of visualizing acquired knowledge in the era of digital learning and gamification.
Metacognition is necessary for learning. Without know-ing what you know, what you don’t know and what you are about to learn, seeking new knowledge becomes both hard and inefficient. At the same time, keeping old facts (as well as old skills) in mind at a meta-level when striv-ing for new insights is not always an easy task. Conse-quently, external visible cues and representations are essential, r