V3I6P29

Development and Validation of Digitalized Instructional Material in Problem Solving Involving Probability in Las Nieves District Cluster III 

Mariel G. Belonta^1*, Dr. Donald D. Orbillos²

Abstract

This study developed and validated a digitized instructional material (DIM) on problem-solving involving Probability for Grade 10 learners in the Las Nieves District Cluster III, Agusan del Norte, Philippines. Guided by Mayer’s Cognitive Theory of Multimedia Learning and the ADDIE Model (Analysis, Design, Development, Implementation, and Evaluation), the study employed a descriptive-developmental research design involving 106 Grade 10 learners and 10 Mathematics teachers for focus group discussions. Analysis of third-quarter examination results identified Probability as the least-mastered competency, obtaining a Mean Percentage Score (MPS) of 45%, interpreted as “Not Mastered,” indicating a substantial competency gap. The developed DIM, created through PowerPoint with Visual Basic for Applications (VBA), incorporated animations, simulations, interactive quizzes, gamified activities, and self-assessment tools. Expert validation using the Learning Resources Management and Development System (LRMDS) evaluation tool confirmed the material’s instructional validity and acceptability with respect to content, language, instructional design, multimedia functionality, and assessment quality. Effectiveness testing revealed a significant improvement in learners’ academic performance, with mean scores increasing from 8.12 on the pretest to 22.41 on the posttest (p = 0.001). Findings demonstrate that digital instructional materials are effective learner-centered interventions for addressing competency gaps and enhancing conceptual understanding and problem-solving skills in Mathematics 10 Probability.

Keywords:

Digital Instructional Material, Probability, Mathematics 10, ADDIE Model, Multimedia Learning