<![CDATA[This study aims to develop a digital short storybook based on ethnomathematics that is feasible, practical, and effective for improving the understanding of addition and subtraction of natural numbers in second-grade elementary school students. The type of research uses the ADDIE development research design, which includes the analysis stage, the design stage, the development stage, the implementation stage, and the evaluation stage. This research was conducted on fourth-grade students with a total of 28 participants. The research and development instruments used included material expert validation sheets, media expert validation sheets, and student response questionnaires. The results of the material expert validation test scored 89.15, categorized as "Very Feasible." The results of the media expert validation test scored 98.75, categorized as "Excellent.". Based on the N-Gain test table of 28 students, the average pretest score was 61.43 with a minimum score of 40 and a maximum of 90, and a standard deviation of 12.683. This data indicates that the students' initial abilities before using the learning media were still in the moderate category with considerable variation in their abilities.]]>
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