Özet:

In this work, 7. In the classroom conversion geometry teaching, the action research conducted in the 5E model aims to reveal the impact of students on the development of Van Hiele conversion geometry thinking levels. The research 7. The class was composed of 28 students. The subject of conversion geometry was processed for 4 weeks, according to the action plans prepared in accordance with the 5E model. Before the application, students were applied to the Van Hiele Conversion Geometry Thought Levels Test (VHDGDDT), according to which action plans were created. 7 in the application process. In accordance with the classroom curriculum, worksheets containing the subjects of equal forms, spelling, reflection and spelling-reflection have been prepared and applied. At the end of the application process, students were applied as a post-application test. VHDGDDT's student base has been compared with pre- and post-application levels. The results showed that the action plans implemented in the 5E model in the teaching of conversion geometry increased the students' level of thinking in Van Hiele conversion geometry.