The purpose of this research is to develop mathematical learning models that accommodate the cognitive styles reflective vs. impulsive students to build problem-solving skills, quality (valid, practical, and effective). To achieve the target would do research development (development research) and method development that consists of five stages, namely (1) the initial assessment phase, (2) design phase, (3) the stage of realization/construction, (4) stage of the test, evaluation and revision, and (5) the stage of implementation. To assess the quality of math learning model that accommodates cognitive styles reflective of the impulsive vs, used criteria valid, practical and effective. For testing the quality of models, conducted trials in SMP country 5 Tuban. Based on the research results obtained mathematical learning models that accommodate the cognitive style consists of 6 phases. The term phase can be interpreted as measures of learning activities. Phase of this model are: (1) introduction, (2) the representation of mathematical concepts through realistic problems, (3) organizing the students in groups based on cognitive style reflective impulsive vs. (4) discussion of problem solving and presentation, (5) a problem-solving exercise (Evaluation), (6) cover.