Abstract
In the digital era, students' interest in visiting physical museums has significantly declined, reducing their opportunities to learn directly from cultural and historical sources. This challenge is further exacerbated by the shift in educational paradigms towards the use of mobile technology and digital applications. This study aims to develop an Android-based digital encyclopedia, named "Bali National Museumpedia," as an innovative learning tool for Civic Education targeting junior high school students in Bali. Adopting the 4D (Define, Design, Develop, Disseminate) development methodology introduced by Thiagarajan, the study begins with the initial "Define" stage to identify the learning needs of students and understand their profiles within the context of Civic Education. The research method involves needs analysis and literature review to identify gaps between existing learning resources and students' actual needs. The needs analysis involved 104 students who filled out questionnaires distributed randomly, revealing that while 98% of students expressed strong interest in visiting museums, only 11% had ever done so. Moreover, just 2% of the students had visited a museum in Bali, despite there being over 30 museums on the island. The results from the "Define" stage indicate that 90% students show high enthusiasm for using mobile applications as a learning medium. In conclusion, the "Define" stage in the development of "Bali National Museumpedia" successfully identifies specific needs that will serve as the foundation for designing the digital encyclopedia, with the expectation of enhancing students' interest and understanding of cultural and civic values in Bali through a more interactive and engaging learning experience.

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