@article{oai:niigata-u.repo.nii.ac.jp:00028978,
 author = {川又, 由香},
 issue = {2},
 journal = {数学教育研究, 数学教育研究},
 month = {Oct},
 pages = {24--29},
 title = {図的表現を用いた割合指導の工夫},
 volume = {44},
 year = {2009}
}