@article{oai:juen.repo.nii.ac.jp:00004876,
 author = {布川,  和彦 and Nunokawa,  Kazuhiko},
 issue = {24},
 journal = {上越数学教育研究, Joetsu journal of mathematics education},
 month = {Mar},
 pages = {1--12},
 title = {比例的推論を利用した割合単元の構想と児童の学習過程},
 year = {2009},
 yomi = {ヌノカワ, カズヒコ}
}