Research on visual information presentation systems and content design for learning support in school education has been active. In order to explore new possibilities for learning support activities, we have realized a large-scale video projection system that uses the floor of a gymnasium, one of the important places for children’s learning, as a screen, and are engaged in research on content design for educational support activities using this system. In this paper, we describe the construction method of the large-scale floor projection system. We design a content (mopping guide) on the proposed system to support children with neurodevelopmental disabilities in learning to clean the floor, and verify the effectiveness of the large-scale floor projection system in supporting children’s learning. The effectiveness of the system in supporting children’s learning will be confirmed by comparing the results of cleaning effects before and after the teaching of the mop/guide.
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