RecommendationsThe teachers and Edu

Recommendations
The teachers and Educational Staffs could use the behavioral or gestures observation technique in learning of students during they expressed Mathematical Communication with each other meaningfully which was an evaluation from the students’ working process. In addition, their gestures could be able to be used in reasoning, explaining, and analyzing their performance, concluding their approaches, and evaluating their emotion or feeling during learning. Specifically, under Lesson Study, and Open Classroom situations, the students had freedom in ex-pressing their ideas in various ways including both of verbal, and gestures meaningfully with themselves. We implement this result through pre-service teachers to bring this knowledge working group with teachers in schools and teacher learned these knowledge and I will write article to publish this result. The studies of students’ Mathematical Communication by ges-tures in other class levels should be studied further. And each academic year had trained pre-service teachers about new knowledge to bring this knowledge working group with teach-ers in schools.