The language practitioners especially who concern in education field have obligation to understand the terms and definition about methodology, approach, and method in language teaching. The insight is very important because teacher must explain not only the content but also related theoretical framework in the language studies. The teaching learning process will run well when teachers understand the theory and expert in practical teaching.
Methodology defines "how to" or the way in teaching. It is the general studies of pedagogical practice. In addition, It is included the related theories and research.
Approach is discussing about underpinning theory of language and language teaching nature, and the application of both theory.
Method is the practical of the objective of teaching in the classroom in a variety of audiences and contexts. The objects are related to material, sequencing, teacher-student roles and behaviors, linguistic and subject-matter objectives.