MENTAL CALCULATION STRATEGIES FOR ADDITION AND SUBTRACTION IN THE SET OF RATIONAL NUMBERS

被引：0
作者：
Rezat, Sebastian [1 ]
机构：
[1] Justus Liebig Univ, Giessen, Germany
来源：
PROCEEDINGS OF THE SEVENTH CONGRESS OF THE EUROPEAN SOCIETY FOR RESEARCH IN MATHEMATICS EDUCATION (CERME 7) | 2011年
关键词：
mental calculation strategies; adaptive expertise; rational numbers; didactical models of rational numbers; ADAPTIVE EXPERTISE; COMPUTATION;
D O I：
暂无
中图分类号：
G40 [教育学];
学科分类号：
040101 ; 120403 ;
摘要：
Studies on mental calculation strategies usually focus on elementary school students and accordingly on problems in the set of natural numbers. But, mental calculation is also an issue at secondary school in the context of other number sets. In the paper an exploratory study of eight eighth grade students' mental calculation strategies for addition and subtraction problems in the set of rational numbers is presented. The study focuses on the analysis of the used strategies and on students' adaptive expertise in the choice of the strategies.
引用
收藏
页码：396 / 405
页数：10
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