<![CDATA[Purpose – This study aimed to analyze the need for, design, develop, and evaluate the validity, practicality, and effectiveness of an ADDIE-based teaching module for the Fundamental of Computer Network and Telecommunications Engineering subject for Grade X students in vocational high schools implementing the Merdeka Curriculum. Methods – This Research and Development (R&D) study employed the ADDIE model: Analysis, Design, Development, Implementation, and Evaluation. Data were collected through classroom observations, interviews, questionnaires, and learning achievement tests. Media and subject-matter experts assessed validity, while teachers and students participated in practicality testing. Effectiveness was evaluated using a one-group pre-test and post-test design without a control group. Findings – The needs analysis revealed limited learning resources and insufficient instructional materials for independent learning. The module obtained validity scores of 95% from media experts and 100% from subject-matter experts, both categorized as very valid. Student responses indicated a practicality score of 98%, categorized as very practical. Learning mastery reached 94%, with an average normalized gain (N-Gain) of 0.70, classified as moderate according to Hake's criteria. The Wilcoxon Signed-Rank Test showed a statistically significant difference between pre-test and post-test scores (p < 0.001), indicating improved learning outcomes. Research implications – The module supports competency-based and independent learning under the Merdeka Curriculum by providing structured theoretical explanations and practical activities. It also helps teachers organize instruction and supports systematic student learning. Originality – This study presents a validated, practical, and effective ADDIE-based teaching module specifically developed for this subject in vocational high schools in Wakatobi Regency.]]>
