The ability to develop learning media is an important competency for prospective elementary school teachers. This community service activity aimed to provide practical experience in developing science learning media based on Project-Based Learning (PjBL) through an online workshop. The activity was conducted via Zoom Meeting through preparation, material delivery, media-development practice, mentoring, product presentation, and evaluation. PjBL was used as a framework for media development, while the workshop itself employed a participatory approach. Evaluation was conducted through observation, descriptive review of the products, and a participant response questionnaire. Products were reviewed in terms of alignment with learning objectives, creativity, innovation, ease of use, and potential application in elementary science learning. Participant responses to the workshop averaged 94.4%, categorized as very good. These findings indicate positive participant perceptions and practical experience in developing PjBL-based media. Because no pre-test-post-test data or comparable product scores were available, the findings should not be interpreted as causal evidence of improved skills.
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