This study aims to explore the factors influencing teaching performance in mathematics. With the sample 306 mathematics teachers in Yogyakarta region, Indonesia selected by the balanced random sampling technique, the data collection was employed done using the Likert Scale questionnaire instrument with validity and reliability. The finding of this study would be viewed from the theoretical and practical perspectives in which theoretically it supports the Indonesian government regulation in providing teaching services within educational system. The result revealed there are five core potentials in assisting the teaching performance. Those are knowledge, attitude, skills, beliefs of mathematics and certification. It can be reflected by the lesson planning construct, learning procedure and the connection between personalities in the sense that constructs the relation to other subjects, education and curriculum, and teaching and education. Towards pedagogical, professional, personal and social skills, this initiative refers to strengthen the beliefs construct among knowledge, education and self-confidence in assisting the teaching performance.