Effect of Audio-Visual Technology on Students Academic Achievement and Interest in Electrical Installation and Maintenance Works in Technical Colleges in Anambra State

Abstract

This study was conducted to determine the effect of audio-visual technology on students’ academic achievement and interest in electrical installation and maintenance works in Technical Colleges in Anambra State. The design of the study was quasi-experimental design involving pretest, posttest non-randomized control groups. The study was carried out in technical colleges in Anambra State. The population of the study was 316 (150 males and 166 females) students purposively sampled from two technical colleges that have male and female students in the state. The instrument for data collection was electrical installation and maintenance works achievement test (EIMWAIT) and interest scale adapted by the researchers from the NABTEB past questions between 2010 and 2020. Due to the fact that the instrument was standardized (past examination questions), no further validation was made. Reliability of the instrument was determined using Kuder-Richardson Formula 21 with a reliability coefficient of 0.77 was obtained. Data collected were analyzed using mean scores to answer the research questions and Analysis of Covariance (ANCOVA) to test the null hypotheses at 0.05 level of significance and appropriate degree of freedom. The study revealed among others that students in experimental group achieved higher than those in control group. There is a significant difference in the mean achievement scores of students taught electrical installation and maintenance works with audio-visual technology as compared to those taught with conventional method. Thus, it was recommended that there should be a regulatory policy to encourage absorbance of female students into electrical installation and maintenance works trade.