Middle-Grade Teachers’ Reasoning with Fraction Division Tasks

• 발행기관: 대한수학교육학회
• 저자명: Soo Jin Lee
• 간행물 정보: 『수학교육학연구』제30권 특별호, 153~168쪽, 전체 16쪽
• 주제분류: 사회과학 > 교육학
• 파일형태: PDF
• 발행일자: 2020.08.31

영문 초록

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.

키워드

Reasoning with quantitative units Fraction division Mathematical knowledge for teaching Partitioning operations