Abstract. This article explores the importance of the Project-Based Learning (PBL) method in the development of students’ knowledge, skills, and competencies in mother tongue education within the context of competency-based learning. The paper discusses the theoretical foundations and pedagogical features of PBL, its practical application in language teaching, and its impact on students’ communicative competence. It examines how grammar, lexis, and syntax topics in mother tongue instruction can be taught through real-life tasks. The findings confirm the effectiveness of the PBL methodology in fostering creative thinking, independent learning, communication, and coherent expression skills among students. The conclusion offers methodological recommendations for integrating PBL into mother tongue instruction.