<![CDATA[Indonesian language instruction in elementary schools still lacks diverse learning media, which affects student motivation and learning outcomes. This study aimed to develop and test the validity, practicality, and effectiveness of an Augmented Reality (AR)-based digital pop-up book on the "My Feelings" (*Perasaanku*) topic for second-grade students. This development research employed the ADDIE model. Data were collected through expert validation questionnaires, individual and small-group trials, learning motivation questionnaires, and learning outcome tests. The trial subjects consisted of 12 students, while the research subjects included two content experts, one instructional design expert, and one media expert. Data collection methods involved observation, interviews, questionnaires, and learning outcome tests, utilizing questionnaire sheets and test items. Data analysis employed descriptive qualitative, descriptive quantitative, and inferential statistical techniques to assess product effectiveness. The results indicated that the media was rated as "very good" in terms of validity and practicality. Student learning motivation reached 97.50% (categorized as "very good"), and the average learning outcome score was 90.42, exceeding the BSKAP criterion of 86. The media was deemed valid, practical, and effective. This research highlights the potential of AR technology as an instructional innovation that enhances student engagement and learning experiences in an interactive and meaningful way.]]>
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