Materials mode is one of the four modes of a lesson in the Self Evaluation Teacher Talk (SETT) framework. The aim of this study is to identify the interactional features during the materials mode in Mugla, Turkey. The lessons of English teachers at the state schools and the microteaching presentations of teacher trainees at Mugla Sitki Koçman University were recorded, transcribed and analyzed in comparison with the framework. The findings indicate that although the interactional features match to those defined in SETT for the most part, there are also some differences that can be attributed to cultural and local practices. The analysis showed that mother tongue plays an important role in the fulfillment of the pedagogical goals. The findings indicate that mother tongue should be taken seriously in teacher education.