标题:626 文の長さの比重の測定の試み(17.教科・教授過程(3),日本教育心理学会第5回総会部門別研究発表要旨・討論の概要) [in Japanese] 626 A formula to measure sentence weights(17.Subject matters and teaching processes (3),PROCEEDINGS OF THE FIFTH ANNUAL CONVENTION OF JAPANESE ASSOCIATION OF EDUCATIONAL PSYCHOLOGY PAPERS AND THE SUMMARIES OF DISCUSSIONS) [in Japanese]