Experiences of improving mathematical communication competence for Vietnamese secondary school through theme “solving problem by setting up system of equations”

This paper aims to discuss our experiences of promoting mathematical communication competence for students at secondary school in Vietnam. In this research, we applied the qualitative research that consists of the designed experiment and the participant’s observation method. From result experiment, we show out detail about Vietnamese students not only skills solving productivity problem but also mathematical communication competence. Besides, we offer solutions to enhance students’ effective learning activity.