Resumen

Mathematical modeling has many possible benefits for students when implemented in K–12 mathematics instruction. When teachers have positive self-efficacy for mathematical modeling it is more likely they will continue to implement it. In order to measure teacher’s self-efficacy in the context of teaching mathematical modeling the development of an instrument specific to mathematical modeling is needed. The purpose of this study was to develop and validate the Teaching Mathematical Modeling Self-Efficacy Scale (TMMSS) as a tool for measuring perceived teacher preparedness for implementing mathematical modeling. The TMMSS was constructed through a thorough review of the literature regarding K–12 mathematical modeling and prior research on the development of teacher self-efficacy instruments. The participants for this study were from the USA. The TMMSS can be useful for evaluation of mathematical modeling professional development and school-based mathematical modeling research. Keywords: K–12 Teachers; Mathematical Modeling; Self-Efficacy.