@article{oai:juen.repo.nii.ac.jp:00006566,
 author = {福沢,  俊之},
 issue = {15},
 journal = {上越数学教育研究, Joetsu journal of mathematics education},
 month = {Mar},
 pages = {121--132},
 title = {Cabriを使う個人に焦点をあてた活動分析の方向性と意義},
 year = {2000}
}