早期の非形式的な分数知識は重要である:小学1年生から2年生にかけての縦断的調査
Ilyse Resnick1, Alexandria A Viegut2, Christina Areizaga Barbieri3
1University of Canberra, Australian Capital Territory, Bruce 2617, Australia.
Journal of experimental child psychology
|January 21, 2026
まとめ
幼児期の非形式的な分数知識は、後の数学的成功の重要な予測因子である。
科学分野:
- 認知的発達
- 数学教育
- 発達心理学
背景:
- 幼児期の教育では、形式的な分数の指導が不足していることが多い。
- 非形式的な分数知識は、若い学習者の中で自然に発達する。
- 分数の理解は、数学的達成度全体にとって重要である。
研究 の 目的:
- 小学1年生の初期の非形式的な分数知識を特徴づけること。
- 小学2年生までの非形式的な分数理解の成長を調べること。
- 初期の非形式的な分数知識と、その後の数学的達成度との関係を調査すること。
主な方法:
- 小学1年生から2年生までの80人の子供たちを対象とした縦断研究。
- 象徴的および非象徴的な項目を用いた非形式的な分数知識の評価。
- 数感覚を統制した初期の分数知識と数学的達成度との予測関係の分析。
主要な成果:
- 子供たちは、小学1年生から2年生にかけて、非形式的な分数の理解を深めた。
- 象徴的な課題と比較して、非象徴的な分数課題の成績が高かった。
- 「半分」の理解は1年生で向上し、「3分の1」や「4分の1」の理解は2年生で向上した。
- 分数の知識には、個人差が大きいことが観察された。
- 初期の非形式的な分数知識は、後の数学的達成度を予測した。
結論:
- 初期の非形式的な分数知識は、数学的発達のための基礎的なスキルである。
- 非形式的な分数理解の成長は、整数操作能力と関連している。
- 初期の分数概念に焦点を当てた介入は、数学的達成度全体を向上させる可能性がある。
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