Mathematics teaching materials have an important role in supporting the achievement of the teaching goals of elementary school teacher education. One of the goals is to develop problem solving skills, but the existing teaching materials were not sufficient to facilitate problem solving. Therefore, problem solving based mathematics teaching materials were needed. The purpose of this research is to produce a mathematics teaching material model based on problem-solving, to support the goal achievement of mathematics primary education courses on the postgraduate program of primary school teacher education. This research and development used descriptive and evaluative methods. The descriptive method used to collect data on mathematics teaching materials, postgraduate student conditions, and supporting and inhibiting factors in developing the model of mathematics teaching material based on problem solving. The evaluative method was used to evaluate the testing process in developing mathematics teaching material model based on problem-solving. The product was developed through trials on postgraduate students from faculty of teacher training and education university of Bengkulu as the subjects. The data collection instruments were documents, questionnaires, and learning outcomes tests. Furthermore, the data were analyzed descriptively qualitatively. The results showed mathematics teaching material model based on problem-solving was valid and practice.