https://penerbitgoodwood.com/index.php/Jahidik <p style="text-align: justify;">Jurnal Humaniora dan Ilmu Pendidikan / Journal of Humanities and Educational Sciences (Jahidik) is a national, scientific and peer-reviewed journal that publlishes topics of humanities and education in the forms of research article, review article, book review, case study, and special case report. Jahidik is expected to answer essential and interesting questions in the fields of humanities and education.</p> Penerbit Goodwood en-US Jurnal Humaniora dan Ilmu Pendidikan 2797-7803 <p>Authors who publish with this journal agree to the following terms:</p> <ol> <li class="show">Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a&nbsp;<a href="http://creativecommons.org/licenses/by-sa/4.0/" target="_blank" rel="noopener">Creative Commons Attribution License (CC BY-SA 4.0)</a>&nbsp;that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.</li> <li class="show">Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.</li> <li class="show">Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.</li> </ol> https://penerbitgoodwood.com/index.php/Jahidik/article/view/7186 <p><strong>Purpose:</strong> This study aimed to develop the Magic Disk learning medium for the topic of Indonesian ethnic and cultural diversity, evaluate its feasibility through expert validation, and examine its effectiveness in improving fifth-grade social studies learning outcomes.<br /><strong>Methodology:</strong> The study employed a Research and Development approach using the 4D model (Define, Design, Develop, Disseminate). The product consisted of a laminated doublespinner disk. Effectiveness was evaluated using a one group pretest–posttest design involving 30 fifth-grade students at MI Persis 72 Gunung Buntung, Serang Regency, Indonesia. Data were collected through observation, interviews, questionnaires, documentation, and achievement tests, and analyzed using descriptive statistics, a paired-sample t-test, and normalized gain. <br /><strong>Results:</strong> Expert validation reached 83.90% (very feasible), while teacher and student responses were 91.07% and 93.83%, respectively (very good). The mean score increased from 61.64 to 84.70, with a significant improvement (t = 6.359, p &lt; .001, d = 1.16). The normalized gain was 0.60 (moderate), and the standard deviation decreased from 19.11 to 6.59.<br /><strong>Conclusions:</strong> The Magic Disk proved feasible, practical, and associated with significant improvements in students' social studies achievement while reducing score variability. Owing to the absence of a control group, these improvements should be interpreted as associated with, rather than caused by, the intervention.<br /><strong>Limitations:</strong> The study involved a single school, one group pretest–posttest design, a short implementation period, and one instructional topic.<br /><strong>Contributions:</strong> The study provides an inexpensive, non-digital gamified learning medium for elementary social studies and contributes evidence supporting manipulative media to enhance classroom engagement and learning outcomes.</p> Sakila Lailatul Jannah Anna Maria Oktaviani Copyright (c) 2026 Sakila Lailatul Jannah, Anna Maria Oktaviani https://creativecommons.org/licenses/by-sa/4.0 2026-07-15 2026-07-15 6 1 1 19 10.35912/jahidik.v6i1.7186