The B-MTL is a questionnaire that is designed to measure teachers’ beliefs about mathematics teaching and learning. It measures teacher beliefs on the following three scales: Transmissionist, Facts First, and Fixed Instructional Plan. For more detail related to the B-MTL please visit the https://www.schoenresearch.com/products/assessment-resources/ ---------- **Related publications:** Schoen, R.C., & LaVenia, M. (2019) Teacher beliefs about mathematics teaching and learning: Identifying and clarifying three constructs, *Cogent Education Open Access*, *6* (1), 1–29. https://doi-org.proxy.lib.fsu.edu/10.1080/2331186X.2019.1599488 ---------- The research and development reported here was supported by the Institute of Education Sciences and United States Department of Education through Award Numbers R305A180429 and U423A180115 to Florida State University. The opinions expressed are those of the authors and do not represent the views of the Institute or the U.S. Department of Education. ----------