Njeru, Tecla WanjaOndigi, Samson RossanaOludhe, David Owuor2025-10-212025-10-212025-03Njeru, T. W., Ondigi, S. R., & Oludhe, D. O. (2025). Audio-visual media use and its effect on the performance of learners in physical geography in secondary schools in Kiambu County, Kenya. International Journal of Economics, Commerce and Management (United Kingdom), 13(3), 150–162. https://ijecm.co.uk/wp-content/uploads/2025/03/13310.pdfhttps://ijecm.co.uk/wp-content/uploads/2025/03/13310.pdfhttps://ir-library.ku.ac.ke/handle/123456789/31790ArticleAudio-Visual Media application in Physical Geography instruction in secondary schools has the possibility of enhancing understanding of concepts among the learners. Students generally find many concepts in Physical Geography abstract and therefore difficult to learn, leading to poor performance in Geography. This study sought to investigate whether, the use of Audio-Visual Media in Physical Geography instruction would have a positive effect on the learner’s performance in Kiambu County, Kenya. The objective of this study was to assess the effect of using videos in the teaching and learning of glaciation in Physical Geography on the learner’s performance. The study was anchored on the sensory stimulation theory of Dugan Laird (1985). It adopted a pretest-posttest type of quasi-experimental design. The study target population comprised secondary schools, the principals, Geography teachers and Geography students in Kiambu-County. Purposive and simple random sampling techniques were used to select the schools and allocate the experimental and control groups. Two public mixed day secondary International Journal of Economics, Commerce and Management, United Kingdom Licensed under Creative Common Page 151 schools were selected in this study. The study sample consisted of 71 students, 7 teachers and two principals. Data collection was done through achievement tests (pre-test and post-test), classroom observation schedule and teachers’ questionnaires. Quantitative data was analysed with the assistance of SPSS computer software to generate the dependent and independent ttest. The statistical significance was tested at α = 0.05 and presented using frequency Tables. The qualitative data was analysed using thematic analysis and presented in written narratives. The study found that there was a significant difference in performance between the experiment and the control group with the students in the experiment group having higher scores in their performance compared to the students in the control group after the post-test. The study concluded that the use of videos in the teaching and learning of Glaciation topic in Physical Geography had a great positive effect on students’ performance, therefore, AV Media is effective in Physical Geography Instruction. Based on the findings, the study recommended that, the government provide funding for the acquisition of AV Media in secondary schools and that policy makers and curriculum designers formulate policies geared towards production of appropriate AV Media for Geography instruction.enArticle