Effectiveness of audio-visuals in enhancing understanding of circulatory system

Abstract

The objective for this study was to determine the effectiveness of audio-visual method of teaching over traditionally-designed instruction on second year students of Awe Senior High Technical School in circulatory system. Three (3) research questions and two (2) null hypotheses were formulated to serve as guide for this study. Samples of two intact technical classes were placed into experimental and control groups. The study made use of a standardized achievement test items and a structured questionnaire as the instruments for data collection, the scores obtained were analysed using the t-test statistical method. Quasi-experimental non randomized design involving the pre-test and post-test was employed for the purpose of this study. The result obtained at pretest for both groups had a p-value of 0.13955 at 0.05 significance level therefore failed to reject the null hypothesis which stated that there was no significant difference between the two groups at pretest. Results obtained at posttest 10−4 which is less than 0.05 therefore, the null hypothesis which stated that there was no significant difference between experimental and control groups at posttest was rejected. The rejection was attributed to the use of audio-visuals on the experimental group. The findings revealed that the use of audio-visuals in teaching was most effective way of improving students’ performance in the teaching and learning of circulatory system in Integrated Science.