Effect of Non-Conventional Machining Instruction for Surface Preparations on Students’ Achievement and Retention by Mechanical Craft Students in Technical Colleges in Enugu State
- Post by: ejem
- July 26, 2022
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This study empirically investigated the Effect of Non-Conventional Machining Principles Instruction Model (NMPIM) on students’ achievement and retention in machining. The study was carried out with respect to the principles of surface preparation. The effect of NMPIM and the conventional method were studied. The problem of the study was encapsulated in the dictum of John Dewey – if we teach today as we taught yesterday, we rob our children of their tomorrow and a Hebrew proverb – do not confine your children to your own learning for they were born in another time. One research question and one null hypothesis guided the study. A non-equivalent pretest-posttest non randomized parallel group quasi experimental design was adopted for the study. The study was conducted in Government Technical Colleges in Enugu State. Intact classes of the only two technical colleges offering Machining Craft practice were used as subjects, with 85 and 36 students for experimental and control groups respectively. A structured instrument constructed by the researcher was validated by five experts, one from University of Nigeria Nsukka (UNN) and four from Enugu State University of Science and Technology (ESUT). The validated instrument when subjected to item stability and internal consistency tests yielded 0.87 and 0.98, using Pearson product moment correlation coefficient formula, and Kuder Richardson (K-R 20) formulae respectively. The trial testing of the instrument by test retest was carried out in Government Technical College, Abakaliki, Ebonyi state. The research question was answered using Mean, Standard Deviation while the null hypothesis was analysed and tested using Analysis of Covariance (ANCOVA) at .05 level of significance. The results showed that year two machining students taught Machining with NMPIM achieved higher and retained higher in all the principle of surface preparation, compared with those who were taught with the conventional method. It was recommended that the TVET curriculum should be reviewed in line with the current technological realities with provision for 21st century equipment and training materials. Therefore, NMPIM should be adopted in teaching Machining to keep the students abreast of the 21st century technology which is ever evolving.
Keywords: Non-Conventional Machining Instruction; Surface Preparations on Students’ Achievement and Retention; Mechanical Craft Students
Boniface Ugochukwu Ezeora PhD | FULL PDF