@article{oai:phoenix.repo.nii.ac.jp:00000660,
 author = {栗山, 和広 and クリヤマ, カズヒロ and KURIYAMA, Kazuhiro},
 journal = {九州保健福祉大学研究紀要, Journal of Kyushu University of Health and Welfare},
 month = {Mar},
 note = {P(論文), The purpose of this study was to examine whether children who had been instructed on the ratio concepts could properly identify concepts such as a base quantity and a compared quantity. Thirty-three sixth graders of elementary schools were administered three problems of ratio concepts, and were made to identify the correspondence between each quantity and the concept. Results indicated that the percentage of children who could correctly identify three components were 45% in the first term of proportion, 27% in the second term of proportion, and 18% in the third term of proportion, suggesting that the ability of children to compose proportion is poor. Based on the results above, it was suggested that one of the origins for the difficulty in solving ratio word problems is because children cannot correctly identify the components of the ratio concepts.},
 pages = {9--14},
 title = {割合概念における構成要素の同定},
 volume = {8},
 year = {2007},
 yomi = {クリヤマ, カズヒロ}
}