Identifying teaching-related behaviors that prevail on students' optimal functioning has been a relevant research topic in recent years (Stroet et al., 2015a; Trautwein et al., 2015). Improving students' learning is a widespread educational concern, and previous literature has shown that teaching quality plays a key role enhancing students' learning and outcomes (Wallace et al., 2016). In this regard, previous studies have consistently shown what teachers do in the classroom meaningfully influence students' learning, and that having effective teachers eases students to reach their full potential (Maulana et al., 2015; Torrijos et al., 2018). However, there is a lack of sufficient literature regarding the specific behaviors of math teachers that impact on students' performance (Rimm-Kaufman et al., 2014). This deserves special attention for secondary education, since math abilities play a direct role in students' competences to be successful in school (Gaspard, 2015; Kosovich et al., 2015) and affect students' future academic and professional performance (Seaton et al., 2014). Moreover, at secondary education stage, students' interest in school usually lessens, and their math achievement gets significantly worse (Kiemer et al., 2015). This highlights the necessity of better knowing how