<![CDATA[The limitation of digital learning materials that remain predominantly PDF-based is one of the challenges in providing interactive geometry learning. This study aimed to develop an interactive digital learning material based on Flip PDF Professional for curved-surface solids for eighth-grade students at SMPN 4 Jember. The study employed a Research and Development approach using the ADDIE model, comprising Analysis, Design, Development, Implementation, and Evaluation. Data were collected through a literature review, interviews, expert validation sheets, teacher and student response questionnaires, and a learning achievement test. Data were analyzed descriptively using percentages. The validation results showed scores of 80.0% for language, 83.3% for media, and 66.7% for material, categorized as very valid, very valid, and valid, respectively. The practicality assessment yielded responses of 84.4% from the teacher and 95.8% from students, both categorized as very practical. In the field test involving 31 students, 23 students (74.2%) achieved the mastery criterion. The developed product was valid and practical and showed potential effects in supporting students’ mathematics learning achievement.]]>
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