Research into Relationship between the Computational Estimation Ability and Strategy and the Mental Computation Ability : Analysis of the Fourth, Fifth, and Sixth Graders in Japan

Hiroshima journal of mathematics education Volume 2 Page 35-44 published_at 1994-03
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Title ( eng )
Research into Relationship between the Computational Estimation Ability and Strategy and the Mental Computation Ability : Analysis of the Fourth, Fifth, and Sixth Graders in Japan
Creator
Source Title
Hiroshima journal of mathematics education
Volume 2
Start Page 35
End Page 44
Abstract
The purpose of this research is to obtain performance data on the computational estimation and mental computation skills of Japanese students in grades 4, 5, and 6, to clear effects of the teaching and learning of rounded numbers and rounding strategies on computational estimation, and to inquire the relationship between computational estimation ability (CEA), strategy (CES) and mental computation ability (MCA). This paper shows that: (1) the teaching and learning has strong effects on computational estimation containing only numerical data positively and on computational estimation in problematic situations negatively; and (2) there are significant relationships both between CEA and MCA, and CEA and CES, but there is no significant relationship between CES and MCA. These results suggest that the reasonable and efficient computational estimation requires flexible rounding of numbers based on sound number sense as well as mental computation ability.
NDC
Education [ 370 ]
Language
eng
Resource Type departmental bulletin paper
Publisher
Department of Mathematics Education, Faculty of Education, Hiroshima University
Date of Issued 1994-03
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0919-1720
[NCID] AN10444573