Enhancing Students' Achievement in Volumetric Analysis through concrete Exemplar Model in Colleges of Education in North -West Nigeria

Badiyya Muhammad Bugaje, Sa'adatu Muhammad Madaki, Maryam Isah Shika

Abstract


This study investigated the effect of Concrete Exemplar Model on Students academic performance in Volumetric Analysis concept among Federal Colleges of Education North West Zone, Nigeria. The study adopted pretest and posttest quasi experimental control group design. The population of the study comprised 718 (310 male and 408 female), all from the six Federal Colleges of Education in North- West Zone, Nigeria. The sample of one hundred and ten (110) NCE Chemistry students were purposively selected from two schools participated in the study. The schools were randomly assigned to experimental and control groups. The experimental group was exposed to concrete exemplar model while the control group was exposed to conventional laboratory teaching method. one validated instrument was used for data collection namely, Volumetric Analysis Performance Test (VAPT) with reliability coefficient of 0.73 was used to measure performance of Students. The reliability of the VAPT was determined using Pearson Product Moment Correlation Coefficient (PPMC) after test-retest method was applied. The Study was guided by two objectives, two research questions, and two hypotheses. Two research questions were answered using descriptive statistics of mean and standard deviation and two null hypotheses were tested at p < 0.05 level of significance. Data collected were analyzed using t-test statistic. The results among others revealed that (a) a significant difference in the mean performance scores of the experimental and control group (p = 0.001 < 0.05).  Based on these findings it was concluded that students taught Volumetric Analysis concept using concrete exemplar model performed better than those taught same concept using conventional laboratory method. Furthermore, there was no significant difference between the performance of male and female students taught with concrete exemplar model. Based on these findings, the researcher recommended among others that, the use of concrete exemplar model should be encouraged among chemistry teachers at NCE level in teaching volumetric analysis concept to enhance students’ performance.


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