This article was written based on research which aims to develop self-diagnostic assessment media by scores based on desktop on impulse and momentum material. In addition, it aims to determine product quality based on expert assessment and student responses. Product was equipped with the results of the diagnosis and learning suggestions for students based on the scores obtained on each item. The type of research used was the 4-D Model Research and Development. The subjects of this study consisted of 2 experts, 2 practitioners, 3 colleagues, and 44 grade 10 students at Muhammadiyah 2 Yogyakarta High School. Data collection was carried out using product assessment sheets and student response questionnaires. Assessment sheet was used as a guide to the feasibility of the product. The results of expert assessment showed that the products that had been developed were in the “Very Good” category with an average score of 0.90 on a scale of 0-1. Student responses were used as an assessment of product legibility. Student responses showed the “Good” category, with an average score of 3.28 on a scale of 1-4. Therefore, self-diagnostic assessment media by scores based on desktop on impulse and momentum material was appropriate to be used to diagnose students’ initial abilities. In addition, the results of the diagnosis can be used as a basis for evaluation to carry out learning by teachers, so that effective learning can be achieved.