It was aimed to investigate the effect of teacher candidates' self-efficacy towards science teaching and technological pedagogical content knowledge on their self-confidence. In this study, pre-experimental design method was used. Thirty prospective science teachers from different universities participated. The trainings were given by faculty members and continued for eight days. Two different scales were used as data collection tools. While there was no significant difference in self efficacy towards science teaching scores of prospective science teachers of contemporary approaches education, there was a significant difference in TPACK self confidence in favor of post-test. It is considered that more importance should be given to the integration of technology during university education.