The purpose of this research is to increase the concentration of students in mathematics and encourage and train math teachers Mts through "action research" is expected to solve problems faced by teachers in the classroom by using a systematic way of thinking. To achieve this goal researchers collaborate with teachers of mathematics by doing research, classroom-based class action. Step Analysis done with the initial dialogue, planning, action learning, action, observation, reflection and evaluasi.Penelitian conducted with four rounds. The results showed that an increase in concentration of students in learning math yag mean, before the research becomes 19.35% 64.50% after the study.