This is an open access article under the CC-BY-NC-ND license Berkala Ilmiah Pendidikan Fisika ISSN : 2337-604X (print) ISSN : 2549-2764 (online) Vol 10 No 2 2022 https://ppjp.ulm.ac.id/journal/index.php/bipf page 179-185 Mobile Learning “Asmeralda” for Teaching Static Fluid at Senior High Schools Iman Alkautsar* and Mita Anggaryani Physics Education, Faculty of Mathematics and Natural Science Universitas Negeri Surabaya, Surabaya, Indonesia iman.18053@mhs.unesa.ac.id DOI:10.20527/bipf.v10i2.13341 Received: 11 May 2022 Accepted: 30 September 2022 Published: 30 September 2022 Abstract This study applied Research and Development (R&D) method for developing a mobile learning media for teaching static fluid material, namely "Asmeralda" (Aplikasi Mobile Learning Fisika Fluida). This study aims to assess the feasibility of "Asmeralda" implemented in Physics class. In developing "Asmeralda", this study follows the ADDIE steps: Analysis, Design, Development, Implementation, and Evaluation. The data collection used questionaries and interviews. The participants in this study consist of expert lecturers and senior high school students in Surabaya. The results show a positive response towards "Asmeralda" as mobile-based learning media for teaching static fluid. The average feasibility assessment according to expert lecturers as media validators: the material is 91% very feasible, the media is 92.8% very feasible, and the assessment is 91.7% very feasible. The media, according to students, is 92% feasible, 94% practical, and 90% effective. Based on these results, it can be concluded that the mobile-based learning media "Asmeralda" is feasible for teaching static fluid material at Senior High School. However, this conclusion is based on one case in one school in Surabaya. Further study in implementing Asmeralda and mobile learning is crucial for a better strategy in developing media-based computer information. Keywords: Mobile Learning; Static Fluid; Learning Media © 2022 Berkala Ilmiah Pendidikan Fisika How to cite: Alkautsar, I., & Anggaryani, M. (2022). Mobile learning “asmeralda” for teaching static fluid at senior high schools. Berkala Ilmiah Pendidikan Fisika, 10(2), 179-185. INTRODUCTION The development of science and technology requires improving the quality of education by utilizing current technology to be realized in the teaching and learning process. Some important concepts in science are difficult to explain verbally, so using media is needed to make them manifest in visual form so that it is easier to understand (Korganci et al., 2015). According to Thinley (2014), nowadays, technology in schools is used to improve effective and better learning processes. Teachers are required to have the expertise to innovate in education, and one of the innovations in education is learning media development (Neo Palelupu & Cholik, 2014). According to Kristanto (2016), learning media are all things that can send messages and make students' thoughts and feelings interested in learning so they can achieve learning goals. Learning media is an essential component of learning resources because the influence of learning media can determine educational success. Learning media in