@article{oai:fukuyama-u.repo.nii.ac.jp:00005592,
 author = {松田, 文子},
 journal = {福山大学人間文化学部紀要, Journal of the Faculty of Human Cultures and Sciences, Fukuyama University},
 month = {Mar},
 note = {P(論文), In this paper, we tried to answer the following three questions : First, how do children acquire the qualitative relational concepts between duration, distance, and speed? Second, is there a relationship between the understanding of these relational concepts and the achievement in the math "speed" in elementary schools? Third, what would be suggested from the answers to Questions 1 and 2 in regard to the improvement in teaching of the math "speed"?},
 pages = {1--8},
 title = {Effects of Understanding Relational Concepts between Duration, Distance and Speed on the Achievement of Math "Speed" in the 5th Grade},
 volume = {5},
 year = {2005}
}