Identify students^ physics performance in wave and optic topic: Rasch analysis Nena Setia Nurani- Khusaini
Physics Department, Universitas Negeri Malang
Abstract
This study aimed to identify students performance in a physics topic, wave and optic, in a school in Indonesia. 70 students participated in this project and were tested with 15 items. Rasch analysis was employed to identify the student ability and the item difficulty. It has been found that level of intensity is the most difficult one, and Dopler effect is the easiest one. The study also found that the majority of the students found that this topic is above their ability which can be seen in the wright map. A further similar project is suggested to be conducted to get better information regarding student ability and item difficulty on physics.
