Development and Expert Evaluation of a 2D Animation Android Application for Teaching the Open Systems Interconnection Model in an IP Address and Subnetting Course

This study designed, developed and evaluated a 2D animation Android application for teaching the Open Systems Interconnection (OSI) Model in an IP Address and Subnetting course for Information Technology students at Malaysian Vocational Colleges. Developed through the five ADDIE phases, the application integrates animation, text, narration, graphics, notes, navigation controls and quizzes. Six purposively selected experts evaluated the product: three content experts and three multimedia design experts. Two dichotomous checklists assessed content, interface, interaction and functionality, while open-ended items collected recommendations. Closed responses were summarised using frequencies and percentage agreement; written comments were categorised by application component and used to guide revisions. All content experts agreed with every rated content item. Multimedia experts agreed with every interaction item and all but one interface item; subtitle positioning received agreement from two of three experts (67%). These findings provide preliminary evidence of content appropriateness and expert-perceived multimedia functionality. They do not demonstrate effects on student understanding, engagement, achievement or retention, which require direct evaluation with the target students.