EFFECT OF MODELS ON INTEREST AND ACADEMIC ACHIEVEMENT OF AUTO-MECHANICS STUDENTS IN TECHNICAL COLLEGES
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EFFECT OF
MODELS ON INTEREST AND ACADEMIC ACHIEVEMENT OF AUTO-MECHANICS STUDENTS IN
TECHNICAL COLLEGES
ABSTRACT
The purpose
of the study was to determine the effect of models on interest and academic
achievement of auto-mechanics students in technical colleges in Lagos State.
Six research questions and six hypotheses were formulated to guide the study.
The research design that was adopted was the quasi-experimental design. The
type of quasi experimental design used is the non-equivalent control group
which involves two groups. Purposive sampling technique was used to select four
out of the five technical colleges used for the study. A simple random sampling
technique was adopted to select the technical colleges that were in the
experimental and the control group respectively. The year one intact classes
were used for the research exercise. The sample consisted of 153 year one
auto-mechanics students in the technical colleges. Regular auto-mechanics
teachers were trained and used for the study. The instruments used for data
collection in this study were: Auto-Mechanics Achievement Test (AMAT) and
Auto-Mechanics Interest Inventory (AMII). The AMAT and AMII were developed by
the researcher and validated by experts in the Department of Vocational Teacher
Education, University of Nigeria, Nsukka. The reliability coefficient of AMAT
was found to be 0.61 and that of AMII was 0.81. Mean and standard deviation
were used to answer the research questions while the analysis of covariance
(ANCOVA) was used for testing the hypotheses at a level of significance of
0.05. The findings of the study were as follows: (1) Using model has a
significant effect on the academic achievement and interest of the students in
auto-mechanic work. (2) Gender has no effect on the academic achievement of
students in auto-mechanic work. (3) Gender was a factor on the interest of
students in auto-mechanic work. (4) Ability level has no effect on the academic
achievement and interest of the students in auto-mechanic work. The findings
identified the implications of study with respect to teachers, educational
planners, tertiary institutions and students. Based on the findings of this research,
it was recommended among others that the use of model is paramount in Nigeria
technical colleges; government should make available various models of vehicle
system for effective teaching and learning in the classroom. Use of model for
teaching various concepts in vehicle systems should be incorporated into the
technical college and other vocational education curriculum.
INTRODUCTION
Models can
be used to facilitate learning especially where real objects may not serve the
purpose. In explaining model, Macdonal (1991) sees model as a plan, a design, a
preliminary solid representation to be followed in construction, something to
be copied. Nachimias and Nachimias (1992) sees model as a likeness of something
and a representation of reality. In other words, model depicts the actual
representation of the original. It also explains how and why a particular
phenomenon comes about. Ezeh (2006) stated that, a model is thus a simplified
structuring of reality which presents-supposedly significant figures or relationships
in a generalized form. Ezeh further stated that all models have basic
identities in terms of characters and functions, and that model is dynamic.
They are modified with time, in line with researches and developments in
various fields. Haggett, Cliff and Frey (1977) in Ezeh (2006) classified models
into conceptual and hardwares. Conceptual model have high degree of abstraction
and are said to be “symbolic or theoretical” while hardware model (physical or
empirical constructions) which depict the actual representation of the original
is said to have low-level of abstraction and are often called “operational”.
This research work adopted the hardware model which is regarded according to
Nachimias and Nachimias (1992) as a likeness of something and a representation
of reality. A model can be constructed and used in teaching some specific
automobile parts such as crankshaft, piston, cylinder block, cylinder head,
connecting rods, push rods, camshaft, plugs, valves, etc. A model is simpler in
construction, easy to carry and move about because it is not heavy as in the
case of a real auto-engine.
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