Abstract The research aimed at investigating the impact of using flipperentiation on developing EFL preparatory stage students' speaking skills and reducing their anxiety. To fulfill the purpose of the research, two instruments were constructed ( an EFL speaking test with an analytic rubric, and a motivation scale). Participants of the study were sixty first-year preparatory stage students at Aldabousy Preparatory School, Al Dakhahlia Governorate for the first semester of (2022-2023). Participants were divided into two groups: one control and one experimental, and each group consisted of 30 students. The experimental group students were taught through fliperentiation while the control group students studied through the regular method produced by the ministry of education. Results indicated that teaching  speaking through flipperentiation led to a significant development in the students' speaking skills and reduced their anxiety. Therefore, it was concluded that using flipperentiation as a means for teaching and practicing the speaking skills of the English language was highly effective in developing the participants' speaking performance and reducing their anxiety. Key words: EFL speaking skills, anxiety, flipperentiation,  EFL preparatory stage students.