<![CDATA[This study investigated the effects of gallery walk instructional strategy (GWIS) on senior school students’ achievement in cell division in Ilorin, Nigeria. Three research questions with corresponding hypotheses were raised and tested. The study was quasi-experimental with a sample size of 79 senior school one students. Gallery walk instructional package and cell division achievement test (CDAT) were used in gathering data. Data were analysed using mean gains, t-test and ANCOVA. Findings from the study revealed that there was a significant difference in the achievement of students who were taught using gallery walk and those taught using the conventional method. However, no significant difference was found between the achievement of male and female students exposed to GWIS. There was also a significant difference in the achievement of low, medium and high scoring students taught using GWIS.It was therefore concluded that GWIS can be used to teach cell division and other hard-to-teach biological concepts. It was recommended that, GWIS should be used by teachers to teach cell division and other similar difficult concepts.]]>
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