<![CDATA[This research is motivated by the significant challenges faced in data presentation materials for fourth-grade students. During the learning process, teachers generally only provide explanations using static images from textbooks or the blackboard. This conventional condition directly results in low student participation, which ultimately hinders the development of their conceptual understanding, especially when trying to sort, compare, present, and analyze measurement data in the form of graphs. To overcome these critical problems, this study aims to develop an innovative learning medium called PADAI (Papan Data Interaktif), as well as to evaluate its feasibility, practicality, student responses, and its overall impact on improving students' conceptual understanding of data presentation. This study applies the Research and Development (R&D) method by utilizing the structured ADDIE development model. The results of the research successfully demonstrated that the developed PADAI medium is highly feasible and effective for classroom use. The feasibility scores obtained reached a perfect 100% from media experts, 88.33% from material experts, and 100% from educational practitioners, indicating excellent quality across all learning aspects. Furthermore, the student response questionnaires yielded a high percentage of 97.54%, which confirms that this interactive medium is exceptionally practical and well-received by the students. This medium is also proven to be highly effective in enhancing student learning outcomes, as evidenced by the average N-Gain Score calculation of 0.70, which officially falls into the high effectiveness category. In conclusion, the PADAI learning medium is fully capable of transforming the learning experience and significantly upgrading fourth-grade students' comprehension of data presentation.]]>
