「解く」から「解る」への転換を目指した算数文章題の再定義と「解る」ための対象的行為としての作問の位置づけ

抄録

We have already developed several interactive environments for learning by problem-posing in arithmetical word problems and use them practically in several elementary schools. Currently, we have formalized this learning activity as "objective action" as a step to promote a learner to externalize a target model. In this paper, we have also explained triplet structure model of arithmetical word problem as the target model.