@article{oai:kumadai.repo.nii.ac.jp:00030404,
 author = {Tanigawa, Tomoyuki and Nishimoto, Akifumi and 谷川, 智幸 and 西本, 彰文},
 issue = {増刊号},
 journal = {熊本大学教育実践研究},
 month = {Feb},
 note = {application/pdf, 論文(Article), The aim of this paper is to investigate whether elementary school students can
understand the concept of derivative expressing the speed of car or running speed and so on.
To the end of goal, we carried out the classes practice on the difference between the
average and the instantaneous velocity under the records that they actually ran 50 meters in　May 22, 2017.},
 pages = {53--59},
 title = {小学校高学年で学習する「速さ」の概念の拡張},
 volume = {35},
 year = {2018}
}