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Article

전자저널 논문

2020; 30(특별호): 153-168

Published online August 31, 2020 https://doi.org/10.29275/jerm.2020.08.sp.1.153

Copyright © Korea Society of Education Studies in Mathematics.

Middle-Grade Teachers’ Reasoning with Fraction Division Tasks

Soo Jin Lee

*Professor, Korea National University of Education, South Korea

Correspondence to:Email: sjlee@knue.ac.kr

Abstract

This study provides a fine-grained analysis of teachers’ reasoning as they engage in quotitive fraction division tasks. In particular, this qualitative analysis considers the mathematical knowledge that six middle-grade teachers used in a professional development program and interviews. In all of the items, fraction division situations were approached through linear or area models. Analysis focused on three knowledge components with which teachers associated in reasoning fraction division tasks: partitioning operations, reasoning with quantitative units (referent units and levels of units), and interpretations of numerical expressions of division.

KeywordsReasoning with quantitative units, Fraction division, Mathematical knowledge for teaching, Partitioning operations

Journal Info

Korea Society of Education Studies in Mathematics

Vol.32 No.2
2020-08-31

pISSN 2288-7733
eISSN 2288-8357

Frequency : Quarterly

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