DEVELOPMENT OF MATHEMATICS INSTRUCTIONAL VIDEOS FOR 8TH GRADE STUDENTS

Abstract

This study investigates the feasibility, practicality, and effectiveness of instructional mathematics videos supported by YouTube as an alternative learning medium for 8th-grade students. The research adopted the Research and Development (R&D) approach using the Borg and Gall model. Data were collected through expert validation, student questionnaires, and achievement tests. Instruments used included a validation rubric for media and material quality, a Likert-scale questionnaire for practicality, and a multiple-choice test to assess effectiveness. Effectiveness was categorized using a theoretical framework based on percentage classifications. The video scored 92% in media quality and 91% in material relevance, placing both in the “Very Valid” category. Small-group trials showed 88.8% practicality based on student feedback. Field tests indicated an effectiveness score of 72.9%, demonstrating improved student performance. The YouTube-based video is a valid, practical, and effective tool for mathematics instruction. It offers significant potential in engaging learners and enhancing conceptual understanding.