非弾性衝突に関する誤概念とその修正方略の事例的研究  [in Japanese] Extraction of Misconception on Inelastic Collision and the Correction Strategy for the Misconception  [in Japanese]

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Abstract

<p>本研究では,衝突現象の中でも身近な「球体と壁との非弾性衝突」に関する誤概念について,その抽出と修正方略の検討・実践を試みた。まず,球体の運動方向と壁とのなす角度(衝突角度,はね返り角度),及び球体の速さについて,衝突前後の変化を尋ねる誤概念調査(事前調査)を実施し,当該現象に関する誤概念を抽出した。その結果を踏まえ,誤概念から科学的概念への概念修正を促すべく,誤概念の明確化と誤概念の獲得過程の明確化の両アプローチからなるメタ認知的支援を実施した。誤概念の明確化では,事前調査で問うた状況を再現する実験,すなわち,球体を壁と斜めに非弾性衝突させ,誤概念の反証的事実に直面させる実験を実施した。また,誤概念の獲得過程の明確化には,誤概念獲得に繋がり得る原因事象を想起・議論させる班内討議を実施した。そして,メタ認知的支援実施後の誤概念修正状況を確認するため,事前調査同様の事後,及び遅延調査を実施した。本研究の結果,球体と壁との非弾性衝突に関する考え方として,斜め衝突では「衝突角度とはね返り角度は等しい」とする誤概念を抽出することができた。そして,当該誤概念の原因事象として,学業経験要因,観察経験要因,デジタル視聴経験要因の3要因の存在が示された。また,メタ認知的支援の結果,著しい誤概念修正が達成されることも確認できた。</p>

<p>In this study, the inelastic collision of a sphere against a wall, a familiar collision type, was focused on as a study subject, and the extraction and the correction strategy of the common misconception was attempted. After grasping the misconception via a misconception survey test, meta-cognitive supports were carried out through identification of the misconception and identification of its acquisition process. For the identification of the misconception, an experimental measurement was performed in the same way described in the misconception survey test, while for the identification of its acquisition process, group discussions were held to reflect upon and discuss cause events of the misconception. After these meta-cognitive supports were concluded, post and delayed misconception survey tests were conducted. As a result, the common misconception that the collision-angle and rebound-angle are equal was revealed. As for the cause events of the misconception, it was implied that these causes can be roughly divided into 3 factors; a schooling factor, an observation factor, and a digital factor. It was also implied that the meta-cognitive supports are effective to help students evolve a common misconception toward the correct, scientific conception.</p>

Journal

  • Journal of Research in Science Education

    Journal of Research in Science Education 59(3), 423-430, 2019

    Society of Japan Science Teaching

Codes

  • NII Article ID (NAID)
    130007631858
  • NII NACSIS-CAT ID (NCID)
    AA11406090
  • Text Lang
    JPN
  • ISSN
    1345-2614
  • NDL Article ID
    029650454
  • NDL Call No.
    Z7-1282
  • Data Source
    NDL  J-STAGE 
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