Akanbi A. O.Salman A. A.2024-04-222024-04-222018Akanbi, A. O. & Salman A. A. (2018): Effects of the use of Vee-diagram on senior school students’ performance in physics in Ilorin, Nigeria. Nigeria Journal of Curriculum Studies. 25(4): 297 - 3120189-9465https://uilspace.unilorin.edu.ng/handle/123456789/12541The present study used Vee-diagram as an instructional tool in classroom settings. The objectives of this study were to: (i) determine the effect of the use of Vee-diagram on students' performance in Boyle's law; (ii) examine the influence of performance levels on students when taught Boyle's law using Vee-diagram and (iii) determine the interaction effect of performance level on students' performance in Boyle's law. The study was a 2 x 3 pretest. posttest, quasi experimental, non-equivalent and non-randomized control group design. It inolved 77 senior secondary school two students in llorin, Kwara State. Nigeria. A researcher-designed Physics Metacognitive Conceptual Understanding Performance Test (PMCUPT) was used to collect data for the study. Mean gain scores were used to answer the three research questions raised in the study. t-test analysis was used to test hypothesis one and three. Analysis of Covariance (ANCOVA) was employed to test hypothesis two formulated for the study. Major findings of the study showed that there was a significant difference in the performance of physics students exposed to Vee-diagram and those who were not exposed to Vee-diagram, there was a significant difference in the performance of physics students taught Boyle's law using Vee-diagram based on performance levels and there was no significant interaction effect of Vee-diagram on students' performance level when taught Boyle's law.enArticle