児童の問題づくりを個別に促進する文章題作成 コンピュータソフト及びカリキュラムの研究開発(VI) : 乗算文章題を対象とした作問学習支援システムの比の三用法に基づく設計・開発

Research and development of computer software to create word problems to promote children's individual development (VI) : Interactive environment for learning via problem posing for multiplication based on three usages of ratio

前田 一誠

平嶋 宗

市村 広樹

学部・附属学校共同研究紀要

THE ANNALS OF EDUCATIONAL RESEARCH

[PISSN] 1346-5104

[EISSN] 2435-9041

[NCID] AA11551679

小学1年生の加減算文章題を対象とした作問学習支援システム「モンサクンTouch」は,一般教室での複数回にわたる利用実験で成果を上げている。本稿では,2年生乗算の領域における課題及びシステムの設計開発について報告する。乗除算文章題の数量は,基準量・割合・比較量で構成されており,問題解決の際にはこれらの適切な抽出および適切な関係づけが重要である。そこで,2年生においては比の第2用法「基準量×割合=比較量」を定着させることを基本とし,課題の設計を行った。

We developed the learning environment for problem posing that can be solved by one-step addition or subtraction arithmetic word problems in the first grade of elementary school. We confirmed that the environment is effective for learning word problems by performing experimental use of the software in a standard classroom. In this study, we describe the design of tasks for problem posing in the field of multiplication in the second grade of elementary school, and the development of a learning environment for multiplication. The arithmetic word problems that can be solved by one-step multiplication or division consist of base quantity, ratio, and compared quantity. The learner must elicit these quantities from the problem and consider the relationship between these quantities while solving. Therefore, we designed the task of problem posing for learning the word problem based on "base quantity x proportion = compared quantity" called the "second usage of ratio" in second grade.

作問学習

乗算

算数文章題

比の三角法

problem posing

multiplication

arithmetic word problem

three usage of ratio

教育 [ 370 ]

日本語

広島大学学部・附属学校共同研究機構

[ISSN] 1346-5104

[NCID] AA11551679