The externalization support system of self-explanation for learning a problem-solving process-cognitive perspective in the operation planning

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When a learner does various tasks on a computer, the interaction of the learning support system is a transition which happens inside the learner. At that time, the educational effect of such knowledge structuring occurs due to externalization of representation. We developed a prototype system so that externalization of self-explanation of the problem-solving process is supported. A learner externalizes the self-explanation "How do I solve the exercise?" She/he explains using not only words but also diagrams, in order to exploit the effect of diagrams. Self-monitoring happens with self-explanation, and the acquisition of a problem solving strategy occurs. We construct a model of externalization on the computer, and consider the occurrence of cognitive load. We propose the presentation of an operation list as a method of load reduction. The memory dependent evaluation becomes more coherent by such a list. In other words, the cognition perspective improves.

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