In this study, The "Action Research" which enables the teacher to provide reflective evaluation of learning methods, to exchange ideas with stakeholders and to provide diversity, to develop alternative strategies and programs to learning strategies, to create the school culture and climate, and to solve a problem with his own resources, has been introduced. The action research, which is one of the scientific research methods that are frequently used in the field of education, is accepted as a general qualitative research that the participation is preliminary, but it is seen that quantitative research methods and techniques are also used. The action research, designed and implemented by practitioners, offers new opportunities, especially for teachers to solve problems and reflect on it in class, using different assessment techniques to improve and improve their work. For this, administrators and teachers need to constantly research and evaluate research-based teaching practices used in classrooms to improve student learning. This study also discusses the historical development, purpose and features of the action research as a research method, its steps, data collection methods and techniques, its benefits, its use in teaching and examples.