Abstract
Physics learning is inseparable from scientific knowledge, physics problem solving and understanding of physics concepts. To solve physics problems, understanding physics concepts is very important. This research aims to identify problems that arise in physics learning. This research uses design research method with Plomp's development model, which consists of three stages: preliminary research, development or prototyping phase, and assessment phase. In this research, a preliminary study was conducted to students and teachers, analyzing student needs by giving a student needs questionnaire, analyzing teacher needs by giving questionnaires and interviews. Preliminary studies conducted through student and teacher needs questionnaires and interviews show that the use of teaching materials is still limited, with teachers having never developed electronic teaching materials such as e-modules. Existing learning models have also not been applied effectively and there is a lack of student concept understanding. In addition, the interaction between teachers and students in providing problem solving tutorials in physics lessons is still not optimal. Therefore, e-modules are needed as teaching materials that can facilitate students in understanding the material so that it can improve students' understanding of concepts