Abstract
This development research aimed to produce Wordwall-based learning materials on the topic of “Climate and Its Changes” for fourth-grade students at SDN Sukabumi 6 and evaluate their validity, practicality, and effectiveness. The study employed a Research and Development (R&D) approach using the ADDIE model, which consists of Analysis, Design, Development, Implementation, and Evaluation. Data were collected through expert validation, student response questionnaires, and pretests and posttests. The learning materials were validated by subject matter experts, media experts, and learning practitioners. The results showed that the Wordwall-based learning materials achieved a very high level of validity, with scores of 93.75% from subject matter experts, 95.83% from media experts, and 92.86% from learning practitioners. The media was also considered highly practical based on the student response score of 96%. Furthermore, student learning outcomes improved, as indicated by an increase in the average score from 77.65% on the pretest to 93.53% on the posttest. All students achieved the expected score on the posttest. These findings indicate that the Wordwall-based learning materials are valid, practical, and effective for supporting IPAS learning on “Climate and Its Changes” and can provide a more interactive and engaging learning experience for elementary school students.