@article{oai:kanazawa-u.repo.nii.ac.jp:00032399, author = {金岡, 弘宣 and 岡山, 優 and 木谷, 崇}, journal = {研究紀要 / 金沢大学附属小学校}, month = {Nov}, pages = {24--33}, title = {理論と実践: 算数科}, volume = {65}, year = {2011} }