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Learning model with learning approach can affect to mathematics achievement and mathematical disposition. The purpose of this reseach is to investigate the impact of mathematucs learning appliyeng Think Talk Write (TTW) model with Realistics Mathematics Education (RME) approach toward mathematics achievement and mathematical disposition of students. This research employed the quasi experimental research. The population of research was all students of the eight grader of junior high school in Karangamyar Regency in academuc year 2016/2017. The sample that was taken using cluster random sampling technique.The result of this research shows that TTW model with RME approach affect to mathematics achievement and mathematical disposition, mathematics achievement and matheatical disposition of students applying TPS model with RME approach gives a better result than those applying direct learning model.