이 연구는 우리나라 초등학교 수학교과서 및 익힘책에 분배법칙이 어떻게 다루어지고 있는지 살펴보고, 차후 초등학교 수학과 교육과정 및 교과서 개발을 위한 시사점을 추출하고자 하였다. 이를 위해 분배법칙 지도가 철저한 중국과 일본 교과서를 살펴보고, 이를 토대로 우리나라 교과서 분석을 위한 다섯 가지 준거를 마련하였다. 분석결과 우리나라 교과서와 익힘책이 여러 가지 측면에서 분배법칙을 효율적으로 다루지 못하는 것으로 나타났다. 이러한 연구결과를 토대로 분배법칙을 초등 수학과 교육과정에 명문화하고, 초등 수학 교과서에서 명시적으로 다루는 방안을 제안하였다.
In this paper, we propose a theoretical framework for Chinese high school mathematics teachers use new textbooks based on the work of Remillard (1999) and Chau (2014). Based on this framework, a multiple case approach was used to investigate how two high school mathematics teachers from Shanghai use new textbooks. The results suggest that in the curriculum mapping arena, both the novice teacher and the expert teacher often planned to appropriate the unit content, and sometimes planned to add supplemental content. When organizing the unit content, novice teacher always planned to follow the new textbook in sequence, while expert teacher often would follow the new textbook in sequence, but sometimes planned to rearrange the unit content. In the design arena, both the novice teacher and the expert teacher tended to appropriate the introduced tasks and definitions. The novice teacher often planned to appropriate the example problems and exercise problems, while the expert teacher often intended to flexibly use the example problems and exercise problems. In the construction arena, the novice teacher seldom adjusted the planned tasks; in contrast, the expert teacher adjusted the planned tasks more frequently. In the reflection arena, the novice teacher often thought she should improve the mathematics tasks, while the expert teacher almost always thought he needed to improve the mathematics tasks. The framework shown in this paper provides a tool to investigate how mathematics teachers use textbooks.
We have studied the idealistic numeration which has been used in Chinese classics of Korea. The form is