Aman Sanusi Siregar^1,, Edy Surya¹, Edi Syahputra¹, Asril Rais Sirait¹

This purpose of this research to know: (1) The improving of mathematical communication ability and students’ self regulated learning through realistic mathematics approach based on Batak Toba culture is higher than students who are given regular learning, (2) there is interaction between learning approach with initial ability of mathematic (KAM) in improvement of students mathematical communication ability and students’ self regulated learning. This research type is quasi experiment. This research was conducted at SMP N 2 Dolok Panribuan. The population in this study is all students of class VII. Based on the results of the analysis, the research results are obtained: (1) improving of mathematical communication ability and students’ self regulated learning through realistic mathematics approach based on Batak Toba culture is higher than students who are given regular learning, (2) there is no interaction between learning approach with initial ability of mathematic (KAM) in improvement of students mathematical communication ability and students’ self regulated learning. Recommended by the teachers can use realistic mathematics approach based Batak Toba culture by presenting issues related to local culture as an alternative learning.

mathematical communication ability, self regulated learning, realistic mathematical approach based on batak toba culture