Language and Symbol Students Use in Thai Mathematical Classroom of Lesson Study and Open Approach

Abstract

This study aims to investigate language and symbol students use in Thai mathematical classroom in the context of Lesson Study and Open Approach. The results reveal that the students use lan-guage and symbol in three characteristics. Firstly, the students use mathematical symbols to re-present mathematical operations. Secondly, the students use oral words to communicate their ideas of mathematical operations. Thirdly, the students draw figures and use diagrams to commu-nicate their ideas of mathematical operations.