@article{oai:teapot.lib.ocha.ac.jp:00042128,
 author = {久下谷, 明 and KUGAYA, Akira},
 journal = {研究紀要, Bulletin in school education},
 month = {Feb},
 note = {紀要論文},
 pages = {55--72},
 title = {割合的な見方を育てる分数の学習},
 volume = {23},
 year = {2016}
}