Research Objective
The objective of this research was to explore the Mathematical Communication by 5th grade students’ gestures in Lesson Study and Open Approach context.
Methodology
The target group of this study included 27 fifth grade students, Nong-tum-nong-ngu-lerm School and 33 fifth grade students, Beung-neum-beung-krai-noon School which were the schools participating in Project for Professional development of Mathematics teachers through Lesson Study and Open Approach, under supervision of the Center for Research in Mathematics Education, Faculty of Education, Khon Kaen University, and Mathematics Communication by students’ gestures as follows: