著者

片桐 重男

出版者

横浜国立大学

雑誌

横浜国立大学教育紀要 (ISSN:05135656)

巻号頁・発行日

vol.15, pp.74-93, 1975-10-15

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The very important aims of mathematical education are to have the children understand the meanings of each computational operation, and to develop their ability of making operational decision. And the meanings of multiplication and division of decimal fractions are the typical examples of mathematical extension. However our teaching of those meanings has been very insufficient. This paper clarifies the mathematical and educational importance of teaching those meanings and it also proves through experimental lessons, that the teaching of the general meanings of both operations has much effect.