摘要：This paper presents the findings from a posttest experiment control group design by using r eciprocal teaching, conducted in Indonesia University of Education to investigate students' ability in mathematical communication and self regula ted learning. Subject of the study were 254 of 9th grade stu dents from three j unior high schools of high, medi um, and low level in Bojonegoro, East Java. The instruments of the study were an essay mathematical communication test, and a self regulated learning scale. The study found that reciprocal teaching took the best role among school cluster and students' pri or mathematics ability on students' mathematical communication ability and self regulated learning as well. The other finding were there was interaction between school cluster and teaching approaches, but was no interaction between students' prior mathema tics ability and teaching approaches on mathematical communication ability and self regulated learning. Moreover, there was assoc iation between mathematical communication and self regulated learning
