Graduate Study Thesis
Master of Arts in Teaching major in Mathematics
University of Rizal System Rodriguez Rizal
2025

As digital technology continues to reshape education, there is growing need for interactive and accessible learning tools to support students understanding of mathematical concepts. The development of digital supplementary learning materials for Mathematics 8 can draw upon existing research on the use of technology-based learning resources in mathematics education This research investigates the effectiveness of the developed digitized supplementary learning materials in enhancing the competencies of Grade 8 students in Mathematics conducted during the school year 2024-2025 at Southville 8C National High School. The study involved learners from three sections, with two sections serving as experimental groups and one as control group Pretest and posttest assessments were administered during the second quarter Employing a mixed-method research approach with sequential explanatory design, the study initially collected and analyzed quantitative data, followed by the collection of qualitative data through students feedback. Post test results indicated a significant improvement in mean scores for both experimental and control groups, with a notably higher increase observed in the experimental groups The disparity underscored the effectiveness of the digital supplementary learning materials alongside the traditional methods Additionally, the differences in posttest mean scores between the experimental and control groups highlighted the significant improvements achieved through the implementation of the digital supplementary learning materials Feedback from teachers further supported the efficacy of these tools, emphasizing their alignment with curriculum objectives and their positive impact on student comprehension, retention and overall experience. Hence, the utilization of the digital supplementary learning materials was highly encouraged to help the students in enhancing their understanding, engagement and knowledge retention in various learning competencies in Mathematics.