Abstract Integrating digital learning tools has become increasingly important for enhancing student engagement and learning outcomes in the rapidly evolving educational landscape. This research aimed to assess the feasibility of a developed e-module and its impact on student learning outcomes. The development process followed the ADDIE Model comprising five stages Analysis Design Development Implementation and Evaluation. The instruments used included interview sheets e-module validation sheets student response questionnaires and a 20-item test instrument. The e-module was validated by experts based on content presentation language and graphic criteria achieving an average validity score of 91.6% indicating strong validity. Following validation the e-module was implemented with 36 eleventh-grade Science Program (XI MIA) students at a high Islamic school in Medan during the 2023/2024 academic year. The results demonstrated a significant improvement in student learning outcomes as evidenced by an N-gain score of 0.76 which falls within the high criteria. Additionally student responses to the e-module were overwhelmingly positive with an average approval rating of 87% categorising their feedback as very good. The findings suggest that the developed e-module is feasible and effective in enhancing student learning outcomes. The high validation scores and positive student feedback indicate that the e-module is well-designed and meets educational standards. It is a valuable tool for improving student engagement and achievement in the classroom. Keywords E-module Problem Based Learning (PBL) colloid system learning outcomes and student responses