This research aimed to reveal teachers' opinions about how the grammar-teaching process is related to the acquisitions in the curriculum, activities, and acquisitions presented in the textbooks teaching in mother tongue, the study reviewed different textbooks from four publishers, Cem, Sonuç, Koza, and Ministry of National Education (MEB) publications prepared for the 2018 primary school Turkish language course curriculum and Education Information Network (EBA) of the Turkish Ministry of Education. Moreover, opinions of ten primary school teachers who have taught all grades regarding the teaching process for grammar acquisition were investigated. The study conducted a case study method, which is one of the qualitative research techniques. Besides, a document analysis was conducted to obtain the research findings. Structured interview protocol and document review were used as the data collection tool. The findings of the study revealed that acquisition in the learning areas of reading and writing for grammar in the curriculum was not clearly and transparently identified, and the limits of the teaching framework were not specified. The study findings also revealed that information was transferred only in the majority of the grammar activities in the textbooks. Also, classroom teachers reported that they used different methods on the subjects they could embody in the teaching process, but they claimed to have difficulties in teaching abstract concepts.