Abstract:

This study was designed to find out, which instructional materials amongst the trials, (chart, diagram and specimen) affect more on biology instruction in senior secondary schools. Adopting three by two factorial design, a total of 200 hundred students from two randomly selected secondary schools in the Ojo Local Government Area made up three experimental and control groups. All students involved in the study were subjected to pre-test, followed by treatment and post-test. Data collected was analysed using SPSS to answer research questions and test hypotheses raised in the study.
Result obtained showed a significant effect of instructional materials on students performance in Biology, among which the real objects standout. The finding also revealed that students taught with instructional materials (experimental groups) were ready to learn and exhibit high level interest towards the subject. While those taught without instructional materials (control group) exhibits low level interest towards biology. Based on the findings of the study, appropriate recommendations were put forward.

Keywords:

Visuals, Experimental, performance, ecology.