@article{oai:air.repo.nii.ac.jp:00003379,
 author = {佐藤, 学 and 藤原, 克敏 and 平塚, 定 and 安井, 敦子 and 椎名, 美穂子 and 小松田, 哲也 and 眞壁, 豪 and SATO, Manabu and FUJIWARA, Katsutoshi and HIRATSUKA, Tadashi and YASUI, Atsuko and SHIINA, Mihoko and KOMATSUDA, Tetsuya and MAKABE, Tsuyoshi},
 journal = {秋田大学教育文化学部研究紀要 教育科学, MEMOIRS OF FACULTY OF EDUCATION AND HUMAN STUDIES AKITA UNIVERSITY EDUCATIONAL SCIENCES},
 month = {Mar},
 note = {We will clarify the range and judgment of the number of children who can process the Estimated the number.
We conducted a survey on children of grade 1st to 3rd by Elementary school.
Result of investigation, Grade 1st and 2nd children are "Overall view". But, Grade 3rd children are "Decomposition view".
We must consider the relationship between guidance of Numerical calculation and guidance of Number calculation.},
 pages = {47--53},
 title = {数学教育における教材研究と授業改善の研究Ⅶ — 児童の見積数処理が可能な数の範囲と判断 —},
 volume = {74},
 year = {2019}
}