THE DEVELOPMENT OF MULTIMEDIA TEACHING MATERIALS ON DISTANCE AREA AND VOLUME TO ENHANCE THE ACADEMIC ACHIEVEMENT IN MATHEMATICS FOR THE HIGHER VOCATIONAL CERTIFICATE IN CONSTRUCTION AND CIVIL ENGINEERING DEPARTMENT AT YALA TECHNICAL COLLEGE

Abstract

This research paper employs a development and research model with the aim of 1) developing multimedia educational materials on distance, area, and volume for students at the advanced vocational certificate level to meet the efficiency criteria of 80/80; 2) comparing the learning outcomes of advanced vocational certificate students before and after instruction; and 3) investigating the satisfaction levels of these students with the multimedia instructional materials on distance, area, and volume. The study population consists of students enrolled in the advanced vocational certificate program in the departments of Construction and Civil Engineering at Yala Technical College during the third academic term of the year 2023, totaling 180 students. The sample group comprises 42 students who did not meet the 70% competency criterion in at least two subjects, including Concrete Technology, Soil Science, Hydraulics, and Structural Mechanics, selected through purposive sampling. The quality of the research tools showed that the multimedia instructional materials are highly appropriate and accurate, with test scores for media effectiveness (E1/E2) ranging from .67 to 1.00. The achievement test scores and the satisfaction questionnaire scores ranged from .67 to 1.00. Statistical methods used for data analysis include mean, standard deviation, and comparative mean analysis between two correlated groups. The research findings revealed that 1) the efficiency of the multimedia instructional materials was 84.40/83.89; 2) the post-instruction mathematics achievement of the advanced vocational certificate students, taught using multimedia materials, was significantly higher than pre-instruction scores at a statistical level of .01; and 3) overall, student satisfaction with the multimedia instructional materials was at the highest level.