小学5年の｢西から東へ移り変わる天気｣の学習に関する気象学的背景の理解のための教育学部生への講義

本論文では,小学校第5学年で学習する｢西から東への天気の移り変わり｣に関する気象学的な背景,｢初等理科内容研究①」でのそれに関する講義の内容,講義の効果や今後の課題について検討した｡中緯度大気大循環の基本的システムとしての日々の現象の実態,特に,東進に伴う高低気圧の発達の様子 を捉えさせるために,典型的な事例を用いて気象衛星画像の動画等の観察や地上天気図への記入作業を行わせた｡また,この単元の学習を春や秋以外の事例で行うことの不都合性に関して,低気圧通過後に冬型になる事例や梅雨前線が停滞する事例を検討させた｡広域の雲分布の振る舞いと大気システム･大 気過程との対応,あるいは日本の天気との関連についての相互関係の理解は不十分と見られるような課題は残ったが,高低気圧の発達を示す幾つかの重要な事実を捉える機会となった点は成果だと考える｡

In the present paper, meteorological background on the eastward propagating weather system around the Japan Islands learned at the 5th grade of the primary school, contents of a lecture on that for the students in our faculty including the teaching materials, and the effects of the present lecture were discussed. In order for the students to find out the characteristics of the mid-latitude weather systems, such as the development of extratropical cyclones and anticyclones with their eastward propagation, the observation of the GMS satellite movies, etc. and the analyses of the sequence of surface weather maps were performed for the typical case in spring. Finally, examples of inadequate cases in the other seasons for the above study subject were presented in this lecture, such as in the winter monsoon or the Baiu seasons. Although understanding of the relationship among the evolution of synoptic-scale cloud systems, that of atmospheric systems and the associated atmospheric processes would not become so sufficient, the students seem to have found out the various facts on the development of extratropical cyclones and anticyclones propagating eastward.