このエントリーをはてなブックマークに追加
ID 19895
file
creator
Bart, William M.
Yuzawa, Miki
Ito, Junko
subject
cognitive development
early mathematical thinking
geometric reasoning
size comparison
NDC
Education
abstract
This study examined the knowledge and strategies that young children used for comparing sizes of geometric figures. Sixty-nine children from the ages 3 to 6 years were asked to compare sizes of geometric figures and their placement and adjustment strategies were observed. The children were also presented with strategies for comparing sizes and asked to choose the most effective one. As a result, children showed four different patterns of uses of strategies and judgments. Differences among children showing the four patterns (referred to as clusters 1-4) were summarized as follows: (a) children in clusters 2-4 made correct judgments for the relative sizes of figures placed on one another, (b) children in clusters 3 and 4 very often used the strategy of adjustment based on two dimensions, (c) only children in cluster 4 very often used the strategies of superimposition and adjustment based on two dimensions at the same time and made more correct judgments for the relative areas of two figures; and (d) children in cluster 4 selected as effective the strategy of adjusting figures based on two dimensions.
journal title
Early Childhood Research Quarterly
volume
Volume 20
issue
Issue 2
start page
239
end page
253
date of issued
2005
publisher
Elsevier Inc.
issn
0885-2006
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2005 Elsevier Inc.
relation is version of URL
http://dx.doi.org/10.1016/j.ecresq.2005.04.003
department
Graduate School of Education



Last 12 months's access : ? times
Last 12 months's DL: ? times


This month's access: ? times
This month's DL: ? times