@article{oai:phoenix.repo.nii.ac.jp:00000987, author = {栗山, 和広 and 吉田, 甫 and クリヤマ, カズヒロ and ヨシダ, ハジメ and KURIYAMA, Kazuhiro and YOSHIDA, Hajime}, journal = {九州保健福祉大学研究紀要, Journal of Kyushu University of Health and Welfare}, month = {Mar}, note = {P(論文), This developmental study examined an acquisition of the concept of decimal numbers. Third-, fourth-, and fifth-grade children were administrated the problems of the judgements of magnitude, composition and resolution tasks, and computation tasks over a period of 2 years. The longitudinal analysis on the strategies suggested three processes of acquiring the concept of decimal numbers. The first was the process considering the concept of decimal numbers based on children’s existing knowledge. The second was a process judging the concept based on an incorrect concept of decimal numbers. The last processes consisted on the acquisition of the concept of decimal numbers. These three processes were discussed in terms of interacting process of the existing knowledge.}, pages = {75--83}, title = {小数概念の習得過程に関する発達的研究}, volume = {1}, year = {2000}, yomi = {クリヤマ, カズヒロ and ヨシダ, ハジメ} }