Development and Evaluation of Interactive Self learning Materials (iSLeM) Using Lumi Application: Enhancing Student Engagement and Learning Outcomes in Computer System Servicing

The rapid advancement of technology and the unprecedented disruptions caused by the COVID-19 pandemic have significantly reshaped the educational landscape worldwide, accelerating the demand for digital, interactive, and student-centered learning tools. This study explored the development and effectiveness of interactive self-learning materials (iSLeMs) designed for Computer System Servicing (CSS), aiming to address the limitations of traditional teaching methods in technical-vocational education. Developed using the Lumi application, the iSLeMs incorporated multimedia elements such as videos, quizzes, and self-assessment tools to promote active, technology-enhanced learning. The research focused on enhancing engagement and academic performance among Grade 11 TVL-ICT students at Lambayong National High School. Using a quasi- experimental design, two groups were studied: one engaged with the interactive iSLeMs, while the other continued with conventional instruction. Each group consisted of thirty- four students selected through cluster sampling to maintain class integrity and reduce sampling bias. To ensure content quality, six expert validators—including ICT professionals, master teachers, and DepEd personnel—reviewed the iSLeMs for relevance, accessibility, suitability, and educational value. Pre-tests and post-tests were administered to measure learning gains. Statistical analysis demonstrated that students who used the iSLeMs showed clear improvements in understanding and retention. As a result, both null hypotheses were rejected, confirming significant differences in the academic performance and gain scores between the control and experimental groups. The findings affirm the value of interactive learning tools in fostering engagement, deeper comprehension, and more inclusive learning experiences for 21st-century learners navigating a digitally driven, post-pandemic world.