TURKISH JOURNAL OF EDUCATION

The purpose of this study is to develop a valid and reliable scale to determine the Technological Pedagogical Content Knowledge (TPCK) Self-Efficacy on material development for pre-service science teachers. In the study, survey model, which is a quantitative research method, was used. The study was conducted in the academic year of 2015-2016 and 659 pre-service science teachers attending third and fourth classes of colleges in 12 different universities Turkey participated. Literature was reviewed for the purpose of determining the items of scale to be used in research. Also, interviews were made with pre-service science teachers, postgraduate students in science and researchers worked in the TPCK. Expert opinions were taken for the scope and face validity of the scale. As for the structure validity of the comments made from the measurement, exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were applied. As a result of EFA, a structure consisting of 40 items and eight factors which explains 46.37% of the total variance. Cronbach alpha internal consistency coefficient of the scale was calculated as 0,93. At the end of the study, a valid and reliable tool which determines Self-Efficacy Scale for Pre-service Science Teachers on Material Development was developed