This study was motivated by the low reading interest among second-grade students at SDN 1 Gedog Wetan, which was attributed to reading materials dominated by small text and minimal illustrations, making them unsuitable for the visual needs of students in the early reading phase. The objectives of this study were to develop a QR Code-based Big Book medium tailored to the students’ characteristics and to determine its feasibility and appeal in fostering reading interest. This study employed the Research and Development (R&D) method using the ADDIE (Analyze, Design, Develop, Implement, Evaluate) development model. Data collection was conducted through interviews, observations, and questionnaires involving subject matter experts, media experts, classroom teachers, and 24 students as test subjects. The results indicate that the Big Book titled "Flying with Wira" is highly suitable for use, with an average validation rate of 93.75%, comprising a 92.5% rating from subject matter experts and a 95% rating from media experts. In the appeal test, this product fell into the "very appealing" category, with a teacher response rate of 94% and a student response rate of 92%. It can be concluded that the development of a QR Code-based Big Book has proven to be feasible and effective in creating an enjoyable reading experience while fostering students’ interest in reading.
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