International audienceIn this study, 187 prospective mathematics teachers' teaching efficacy beliefs and sources of their beliefs were investigated through the administration of Teachers' Sense of Efficacy Scale (TSES) and The Sources of Self Efficacy Inventory (SOSI) scales. Furthermore, this study explored how well hypothesized sources (mastery experiences , vicarious experiences, verbal persuasions, physiological and affective states) predict participants' teaching efficacy beliefs. The calculated mean scores (out of 9) for dimensions of TSES were: 6,35 for Efficacy for Student Engagement, 6,57 for Efficacy for Instructional Strategies, 6,35 for Efficacy for Classroom Management. Multiple regression analysis results showed that combination of hypothesized sources significantly predicted overall teaching efficacy beliefs and all dimensions of TSES
