<![CDATA[Logical thinking is an essential competence for vocational high school (SMK) students learning TCP/IP within the Basic Computer Network and Telecommunication Engineering (DDTJKT) subject due to its abstract, layered reasoning requirements. Preliminary findings indicate conventional instruction leaves students passive and unable to connect concepts logically. This study develops CONNETIC Module, a Contextual Teaching and Learning (CTL)-based interactive learning module built with React, TypeScript, and Supabase, to improve Grade X students' logical thinking. Employing a quantitative Research and Development (R&D) approach following the ADDIE model, a One-Group Pretest-Posttest design was applied to 36 Grade X TJKT students at SMK Negeri 4 Bandung. Data collected via tests, validation sheets, and questionnaires were analyzed using Wilcoxon signed-rank and N-Gain tests. The results show that CONNETIC Module is highly feasible based on expert validation (88.57%), significantly improved students’ logical thinking (Z = -5.224; p < .001; r = .87) with a high overall N-Gain of .77, and achieved excellent usability (82.44%). Integrating a sequential locking mechanism and real-time feedback successfully creates an impactful, responsive learning experience.]]>
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