Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Morita Aiko and Okabe Naomi and Tanimura Ryo and Miyake Motoko and Kojima Yoshiko and Nagase Miho and Matsuda Fumiko,"Understanding of concepts about duration, distance, and speed in fifth-and sixth-grade children","広島大学大学院教育学研究科紀要. 第三部, 教育人間科学関連領域",13465562,広島大学大学院教育学研究科,2002-02-28,50,,419-428,https://cir.nii.ac.jp/crid/1390572174806894208,https://doi.org/10.15027/18436