<![CDATA[This study aimed to determine the feasibility of the FanFun learning media for Environmental Science content in the Natural and Social Sciences (IPAS) subject for fourth-grade students at SDN Rejuno 1 and to identify students' and teachers' responses to the developed media. The study was motivated by the limited use of innovative and interactive learning media, resulting in teacher-centered learning and difficulties among students in understanding the material. This research employed the Research and Development (R&D) method using the 3D development model (Define, Design, and Develop), which was adapted from Thiagarajan's 4D model. Data were collected through observations, interviews, material and media expert validation questionnaires, as well as student and teacher response questionnaires. The results showed that (1) the material expert validation of the FanFun learning media achieved a score of 76% and was categorized as valid, (2) the media expert validation achieved a score of 80% and was categorized as valid, (3) student responses to the use of FanFun learning media reached 99% and were categorized as very good, and (4) teacher responses reached 100% and were categorized as very good. Based on these findings, the FanFun learning media was declared feasible for use as a supporting medium in teaching environmental topics in the IPAS subject for fourth-grade elementary school students. The use of FanFun is expected to create a more interactive and engaging learning environment and enhance student participation in the learning process.]]>
