EFFECTS OF THE USE OF INSTRUCTIONAL MATERIALS ON THE TEACHING AND LEARNING OF COMPUTER IN JUNIOR SECONDARY SCHOOLS

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Product Code: 00004992

No of Pages: 58

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Abstract

This study evaluated the effects of the use of instructional materials in the teaching and learning of computer in the junior secondary schools of Ebonyi State. The study also examined the effect of instructional materials and gender on students’ academic achievement in computer studies. The performance of students taught with instructional materials was compared with those of students taught with conventional teaching method. In order to carry out the study effectively, three research questions were asked and tested. Many related literature were reviewed. The sample for the study consisted of 100 secondary school students. The population of the study consists of all the junior secondary school in Ebonyi state of the total of 223, using the JSS1 student of about 19,250. The researcher constructed the test items, which were then face validated by  Experts; one in computer education and the other in measurement and evaluation after which it was administered to the students. Computer studies achievement test (CSAT) was used to collect data for the study. The data obtained were analyzed. Mean and standard deviation were used to answer the research question. The analysis indicated that instructional materials had significant effects on students’ cognitive achievement in computer. Gender was a significant factor in the students’ overall cognitive achievement in computer. Thus, it is recommended to use instructional materials in the teaching and learning of computer, state governments or their ministries of Education and professional associations should organize workshops, seminars and conferences to train the serving teachers on the use of instructional materials technique. Finally, the limitation of study and suggestion for further studies were highlighted.

 

 

 

 

TABLE OF CONTENTS

Title  i

Approval ii

Dedication  iii

Acknowledgement  iv

Abstract  vi

Table of Contents  vii

List of Tables  ix

 

CHAPTER ONE  1

INTRODUCTION   1

Background to the Study  1

Statement of the Problem   4

Purpose of the Study  5

Significance of the Study  5

Scope of the Study  6

Research Questions  6

 

CHAPTER TWO: LITERATURE REVIEW    7

Conceptual Framework  7

The Need for Computer Education in Nigeria Secondary Schools  10

The use of Instructional Materials  18

Theoretical Framework  20

Review of Related Empirical Studies  22

Summary of Related Literature Review   22

 

CHAPTER THREE: RESEARCH METHODOLOGY  24

Design of the Study  24

Area of the Study  24

Population of the Study  25

Sample and Sampling Technique  25

Instrument for Data Collection  26

Validity of the Instrument 27

Reliability of the Instrument 27

Experimental Procedure  27

Control of Extraneous Variables  28

Method of Data Collection  29

Method of Data Analysis  29

 

CHAPTER FOUR: RESULTS  30

Summary of Findings  32

 

CHAPTER FIVE: DISCUSSION OF FINDINGS, EDUCATIONAL IMPLICATIONS, RECOMMENDATIONS, LIMITATIONS, SUGGESTIONS FOR FURTHER STUDIES, SUMMARY OF THE STUDY AND  CONCLUSION   33

Discussion of Findings  33

Effects of Instructional Materials on Teaching and Learning  33

Educational Implications  35

Recommendations  36

Limitations of the Study  37

Suggestions for Further Study  37

Summary of the Study  38

Conclusion   40

REFERENCE  42

APPENDICES  45

 

LIST OF TABLES

Table 1:     Mean achievement scores of students of the students taught using                    instructional materials and those taught without instructional materials. 30

Table 2:     Mean achievement scores of male and female students taught in the                  experimental group  31

Table 3:   Effect of interaction between treatment and gender on students’ achievements. 31

 


CHAPTER ONE

INTRODUCTION

Background to the Study

Attainment of any teaching and learning objectives involves both human resources and materials resources and factors, that is, the teacher who is the enforcer of the subject content and the availability of both convectional materials and improvised materials, otherwise known as instructional materials. These factors must be in place to ensure attained educational objective, instructional materials are said to be all those materials needed in the classroom to be used by the teacher for the purse of facilitating teaching and learning. According to Kay (2008), instructional materials stimulate the students’ desire to learn, and assist learning process by making assimilations and memorizing of the learned topic easy for students.

          Agun (2008) refers to them as learning materials, the proper use which helps learners to learn faster and better. Offering computer studies, the computer itself serves as an instructional material because the subject is more of concrete object that can be seen and touched by both the teacher and learners (Ituma, 2010).

According to Benson (2011) instructional materials are materials or tools locally made or imported that could make tremendous impact if intelligently used. In most cases learner have the difficulty in understanding some certain concepts as a result of their cognitive operation and ability, hence the need for teachers to employ materials and methods that will facilitate students’ understanding of the concepts as in the case of computer studies is appreciated. It is against this background that (Nwuba2016) cited jean Piaget who postulated human beings to be classified along sensory motor, pre-operational, concrete and abstract cognitive level.

In a real sense, a teacher is someone who combines materials and interprets concepts in other to have desired change or outcome in the learners. The role of a teacher is often formal and ongoing carried out by way of occupation or profession at school or other formal settings.                                                                                                           Education has instrumentally impacted positively to the survival of the society at large, this sole reason is why modifications are required in the educational field in other to induce and facilitate teaching and learning and also meet up with latest changes and trends.  Education of yester years relied on few or no instructional materials in trying to impact knowledge in learners, their assumptions were that knowledge can be forced on student regardless of the individual differences that is found in the classroom. (Obanya2013)

The subject computer studies was introduced into the secondary school curriculum to develop and input in learners the right knowledge and skills about computer and also to empower the youth through entrepreneurships since computer centers are current moving trend in the society (Adebayo, 2013).

According to Abu (2004), the importance of computer device in our society cannot be over-emphasized and that is the reason why the teaching of the computer studies should not be toyed with and should be handled with proper instructional materials. Instructional material is a major determinant that controls the pace of teaching and learning in the classrooms. Okereke (2009) stressed that many school in the state level cannot boast of instructional materials and contend that every government should make education a top priority to help improve the standard of education by providing instructional materials. Instructional material is an aid of teaching and learning. It helps to raise learning from verbalization to practical aspect of teaching and learning. Instructional materials make teaching and learning interesting, easy and amusing. They make learning effective.  

Otu ( 2007 ) stressed out that the computer studies is a "tool"; it is real and should be treated as such, the inability to produce the right teaching instructional materials poses a big threat in students’ academic achievements and performance in the subject. For computer studies to be learned properly, there must be a computer device, due to the fact that the subject presents a level of abstract concepts that need to be visualized by student so as to induce their understanding and to remedy the issue of individual differences.

Therefore for the effective understanding of the subject matter in computer studies and for students to achieve better in computer studies, there is great need to examine the effects of instructional materials on teaching and learning of computer studies with the aim of stimulating the interest of the students.

Statement of the Problem

The junior secondary school is the first part of the secondary school level of education according to the national policy on education (NPOE 2004), which means that proper attention is needed to ensure that students perform well academically, this may not be possible without the application of instructional materials in the classroom. The teachers’ level of resourcefulness, creativity and imagination is credited to the achievement of quality of education. These are expressed on how well the teacher is able to perceive, create, use important information that can enhance and promote effective teaching and learning activities.

           Instructional materials are major determining variables that control the pace of learning. It has to do with the creation of environment in which students can develop the full potentials and lead productive lives in accordance to the demands of their interest, either as individuals or as group within the society.

The Nigerian government, at all levels over the years placed enormous emphasis on instructional materials in shaping efforts as strategies aimed at improving students’ standard of learning in the country but both theoretical and empirical literature failed to capture the real factors as to why the standard of education in the country still remain very low. Therefore, the question to be answered by this study is: what are the effects of instructional materials on teaching and learning of computer studies in Ebonyi State secondary school system

 Purpose of the Study

The main purpose of the study was to ascertain the effects of instructional materials on teaching and learning of computer studies in Ebonyi State. Specifically, the study sought to:

 i.            Examine the effects of instructional materials on students’ achievements in computer studies in junior secondary school of Ebonyi state.

ii.            Examine the effects of instructional materials on the achievements of male and female students in computer studies in junior secondary school of Ebonyi state.

iii.            Examine the interaction effects of treatment and gender on students’ achievements in computer studies in junior secondary school of Ebonyi state.

 Significance of the Study

This study will be of immense benefit to the computer studies teachers, students, curriculum planners and the Ebonyi State ministry of education.

The result of this study will unveil to teachers the importance of instructional materials in the classroom and make them appreciate and begin to use them for their instructions.

The findings of this study will serve as a reference document to groups and learners when conducting research on the effects of instructional materials in computer studies.

And also, the findings of this study will help curriculum planners to attach great importance to instructional materials and also make them to be conscious of integrating instructional aids and theoretical frameworks in curriculum developments.

This study will also play a vital role as source of information to the government of Ebonyi State that inability to provide adequate instructional materials in the subject is leading to the failure of the attainment of instructional aims and objectives.

 Scope of the Study

The study focuses on the effects of instructional materials in teaching and learning of computer studies in junior secondary schools in Ebonyi state. It also encompasses both private and public junior secondary schools in Ebonyi state.

Research Questions

The following questions were designed to guide the study:

1)    What is the difference between the achievements of students taught with instructional materials and the students taught without instructional materials?

2)    What is the difference between the achievements of male and female students taught with instructional materials?

3)    What is the effect of interaction between treatment and gender on students’ achievements in Computer Studies?

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  • Anonymous

    13 minutes ago

    This study was designed to assess genetic diversity of TLR7 gene and its expression profile in the Nigerian indigenous chickens and ISA Brown layer chicken. The study population comprises eight (8) groups (naked neck, normal and frizzled-feathered Nigerian indigenous chickens in rain forest and Guinea Savannah regions respectively, Fulani ecotype chicken and ISA Brown layer chicken). Five (5) blood samples were collected from each chicken group. Genomic DNA was isolated from each blood sample using the Zymo Quick-gDNATM Miniprep kit. The DNA sequencing of chTLR7 gene was done using the Sanger Sequencing Chemistry. Tissues from the thymus and the liver were aseptically collected from Two (2) clinically healthy chickens from each chicken group and were immediately transferred into separate 1.5 ml Eppendorf tubes containing 1 ml of RNALater solution. Total RNA was isolated using ISOLATE II RNA Mini kit. Complementary DNA (cDNA) was synthesized using SensiFASTTM cDNA synthesis kit. The expression of chTLR7 RNA was determined by qPCR assay; β-actin was used as the reference gene. 26 SNPs, two deletions and two insertions in the intronic region of TLR7 gene in the Nigerian indigenous chicken population and ISA Brown commercial layer chicken were found. Haplotype analysis revealed 13 haplotypes out of which nine (9) were unique to the Nigerian indigenous chickens; three (3) haplotypes were shared between ISA Brown layer chicken and the Nigerian indigenous chickens, while one (1) haplotype was unique to the Red jungle fowl. Nucleotide diversity estimates ranged from 0 to 0.019, which were close to zero and suggest that the chicken populations were not genetically differentiated at TLR7 locus. Estimates of gene flow ranged from -0.096 to 0.400 and were close to zero. Genetic distance estimates ranged from 0.007 to 0.054 and were close to zero, which suggests that the chickens have a close ancestor. The estimates of nearest-neighbour statistic ranged from 0.227 to 0.714, which showed that the chicken populations were part of the same panmictic population, hence were not genetically differentiated (P>0.05) at the TLR7 locus. Phylogenetic analysis of TLR7 gene sequences of the genetic groups and the Red jungle fowl revealed very close relationship at the TLR7 locus, which suggests that the TLR7 locus is highly conserved. TLR7 expression in the liver and thymus was significantly different (P<0.01) among the eight chicken groups; the Nigerian indigenous chickens expressed more TLR7 gene than ISA Brown layer chicken. Rain forest naked neck chicken had significantly (P<0.01) highest TLR7 expression of 2.07±0.07 fold. However, expression of TLR7 gene in the liver of rain forest frizzle-feathered and normal chicken, Guinea savannah naked neck, frizzle-feathered and normal chicken, and Fulani ecotype chicken were similar (P>0.05). Gene expression analysis of TLR7 RNA suggests that the Nigerian indigenous chickens could have comparatively more antiviral immune response than ISA Brown commercial layer chicken, hence could be used to develop chickens lines with good antiviral response. Polymorphisms observed at TLR7 gene in the Nigerian indigenous chickens could be used in marker-assisted selection to produce chicken lines with good antiviral response. TABLE OF CONTENTS Cover Page i Declaration ii Certification iii Dedication iv Acknowledgement v Table of Contents vi List of Tables x List of figures xi List of Plates xii Abstract xiii CHAPTER 1: INTRODUCTION 1 1.1 Background Information on the Nigerian Indigenous Chickens 1 1.2 Brief Background on the ISA Brown Commercial Layer Chicken 4 1.3 Toll-like Receptor Seven (TLR7) Gene 5 1.4 Statement of Problem 7 1.5 Objectives of the Study 8 1.6 Justification 8 CHAPTER 2: LITERATURE REVIEW 10 2.1 Origin of the Domestic Chicken 10 2.2 Genetic Diversity of the Domestic Chicken 10 2.3 Assessment of Genetic Diversity within and Between Chicken Populations 11 2.4 Genetic Markers for Assessing Genetic Diversity 12 2.4.1 Random amplified polymorphic DNA (RAPD) markers 13 2.4.2 Restricted fragment-length polymorphism (RFLP) markers 14 2.4.3 Amplified fragment length polymorphism (AFLP) 15 2.4.4 Microsatellites 15 2.4.5 Mitochondrial DNA D-loop 16 2.4.6 Single nucleotide polymorphism (SNP) 16 2.4.6.1 Single nucleotide polymorphisms (SNPs) analyses in different chicken populations 18 2.5 Ecology and Genetic Profile of the Nigerian Indigenous Chicken Populations 21 2.6 Phenotypic Characteristics of the Nigerian Indigenous Chickens 22 2.7 Genetic Analysis of the Nigerian Indigenous Chickens Using Physiological and Biochemical Markers 30 2.8 Molecular (DNA-based) Analyses of the Nigerian Indigenous Chickens 35 2.8.1 Molecular genetic analyses of the Nigerian indigenous chickens using microsatellite markers 36 2.8.2 Molecular genetic analyses of the Nigerian indigenous chickens at mitochondrial DNA D-loop region 37 2.8.3 Molecular genetics analyses of the Nigerian indigenous chickens using single nucleotide polymorphism (SNP) markers 38 2.9 Toll-like Receptors (TLRS) 39 2.9.1 The chicken toll-like receptor repertoire 40 2.9.2 Molecular structure of the chicken TLRs 41 2.9.3 The chicken toll-like receptor genes and their roles in pathogen recognition 42 2.9.4 Molecular variants of TLR genes in avian species 44 2.9.5 The chicken toll-like receptor 7 (chTLR7) gene and its expression profile 47 2.9.6 Polymorphisms of chTLR7, and its association with viral diseases 50 CHAPTER 3: MATERIALS AND METHODS 54 3.1 Experimental Populations 54 3.2 Blood Sample Collection 55 3.3 Laboratory Analysis 55 3.4 Experiment 1: Analysis of Genetic Diversity at TLR7 Gene in the Nigerian Indigenous Chicken Populations and ISA Brown Commercial Layer Chicken Using DNA Sequencing 55 3.4.1 DNA extraction and protocol 55 3.4.2 DNA quantification and integrity 56 3.4.3 Polymerase chain reaction (PCR) and primers 56 3.4.4 Preparation of agarose gel 57 3.4.5 Electrophoresis of PCR products 57 3.4.6 Visualization of PCR products (amplicons) 58 3.4.7 Cleaning of amplicons 58 3.4.8 Agarose gel electrophoresis of cleaned amplicons 59 3.4.9 Sequencing of PCR products 59 3.4.10 Alignment and editing of sequences 59 3.4.11 Single nucleotide polymorphism (SNP) identification and estimation of genetic diversity indices 59 3.4.12 Genetic distance estimation 60 3.4.13 Phylogenetic analysis 60 3.5 Experiment 2: Assessment of Evolutionary Relationship of TLR7 Gene in the Nigerian Indigenous Chickens, ISA Brown Layer Chicken and TLR7 Gene Sequences from Other Poultry Species in Genebank 60 3.5.1 Retrieval of DNA sequences from NCBI database 60 3.5.2 Multiple sequence alignment 61 3.5.3 Genetic distance estimation 61 3.5.4 Phylogenetic analysis 61 3.6 Experiment 3: Gene Expression Profile of TLR7 in Lymphoid Tissues of the Nigerian Indigenous Chickens and ISA Brown Commercial Layer Chicken 61 3.6.1 Experimental birds and management 61 3.6.2 Tissue collection 62 3.6.3 RNA extraction 62 3.6.4 RNA quantification and integrity 63 3.6.5 Complementary DNA (cDNA) synthesis 64 3.6.6 Real-Time Polymerase Chain Reaction (qPCR) 64 3.6.7 Assembling of qPCR data and statistical analysis 65 CHAPTER 4: RESULTS AND DISCUSSION 66 4.1 PCR Optimization of chTLR7 Gene 66 4.2 Genetic Diversity at TLR7 Gene of Nigerian Indigenous Chickens and ISA Brown Commercial Layer Chicken 66 4.2.1 Single nucleotide polymorphisms (SNPs) and INDELs of TLR7 gene in the Nigerian indigenous chickens and ISA brown commercial layer chickens 66 4.2.2 TLR7 haplotype variations, nucleotide diversity, genetic differentiation and nearest-neighbour statistic 75 4.2.3 Genetic distance and relationship of TLR7 gene sequences in Nigerian indigenous chickens and ISA brown layer chicken 83 4.2.4 Phylogenetic analysis of TLR7 gene in Nigerian indigenous chicken populations and ISA brown commercial layer chicken 88 4.3 Evolutionary Relationship of TLR7 Gene in Nigerian Indigenous Chickens, ISA Brown Commercial Layer Chicken and TLR7 Gene Sequence from Other Poultry Species in Genebank 90 4.4 Expression Profile of TLR7 RNA in Lymphoid Tissues of the Nigerian Indigenous Chickens and ISA Brown Commercial Layer Chicken 94 CHAPTER 5: CONCLUSION AND RECOMMENDATIONS 98 5.1 Conclusion 98 5.2 Recommendations 99 References 100 Appendices 117

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