IMPLEMENTATION OF PROBLEM BASED INSTRUCTION (PBI) MODEL FOR INCREASING STUDENTS.

IMPLEMENTATION OF PROBLEM BASED INSTRUCTION (PBI) MODEL FOR
INCREASING STUDENTS’ INTRINSIC MOTIVATION AND LEARNING
ACHIEVEMENT IN OPTIC INSTRUMENTS TOPIC AT
SMA ISLAM AL-ULUM TERPADU MEDAN
ACADEMIC YEAR 2011-2012

By:
Fauziatul Fitria
408121049
Physics Bilingual Education Study Program

THESIS
Submitted to fulfill the requirement for the degree of
Sarjana Pendidikan

PHYSICS DEPARTMENT
FACULTY OF MATHEMATICS AND SCIENCE
STATE UNIVERSITY OF MEDAN
MEDAN
2012


Title

IMPLEMENTATION OF PROBLEM BASED
INSTRUCfiON (PBI} MODEL FOR INCREASING
STUDENTS' INTRINSIC MOTIVATION AND
LEARNING
ACmEVEMENT
IN
OPTIC
INSTRUMENTS TOPIC AT SMA ISLAM AL-ULUM
TERPADU MEDAN ACADEMIC YEAR 2011-2012

Name

Fauziatul Fitria

Reg. Number

408121049


Study Program

Pysics Bilingual Edaeation

Department

Pbysics
Approved by :

ThesiS~

Drs. £,bombing, M. S
NIP. 19570606 198503 I 002
Aclmowledge by :
Head ofPbysics Edueation
Study Program

·~51

NIP. 19640321199003 2 001


Coordinator of Bilingual Class

Prof. Dr. Herbert Sipabutar, M. Sc
NIP. 19610626 198710 I 001

ACKNOWLEDGEMENTS
Alhamdulillah, praise and thanks to Allah SWT who has give a flood of
merci and guidance to writer. Shalawat and Salam to Rasulullah Muhammad
SAW, hopefully His Syafaat will abundant.
This thesis which is titled “Implementation of Problem Based Instruction
(PBI) Model For Increasing Students’ Intrinsic Motivation and Learning
Achievement in Optic Instruments Topic at SMA Islam Al-Ulum Terpadu Medan
Academic Year 2011-2012”, is arranged to acquire scholar degree of Physics Education,
Faculty of Mathematics and Nature Science State University of Medan.
In this occasion, let me say a million thanks to Drs. Eidi Sihombing, M. S. as
thesis supervisor who has guide and give suggestion to writer from initial research until
finished this research. A million thanks also to Alkahfi Maas Siregar, S.si, M,Si, Dr.
Ridwan Abdullah Sani, M.Si, and Prof. Drs. Motlan, M.Sc, Ph.D who have give critic and
suggestion to writer from the planning of research until the finish of thesis writing. A

million thanks to Mr. Prof. Dr. Mara Bangun Harahap, M.S as academic supervisor and to
all Mr. and Mrs. Lecturer and staff employee of Physics FMIPA State University of
Medan who have encourage writer.
Gratefully to my beloved Mother and Father for grow me up and educate me,
and for Nurul Husnah, Fauzan „Asy Ari, Abdul Karim and Fauziatul Wardiah, also my
best friend Fitriani Harahap and Deni Sriwahyuni thanks for your love.
To all of my friend in Physics Department FMIPA UNIMED, especially to 2008
students of Physics Bilingual 2008. Majid, Alfan, Rini, Azwar, Boby, Wita, Ester, Febri,
Laila, Laurent, Luqman, Nurul, Nawi, Risdo, Ruth, and Tika.
Rightfully proud to my friends Devi Andriani Siregar, Kak Irma, Lia, and Dedek,
thanks for support my dreams.
I realize this thesis is out of perfect caused by my literature or knowledge. That‟s
why, I do hope constructivism advice and suggestion in order to make this thesis is useful
for all of us.
Medan,

June 2012

Author,


Fauziatul Fitria

Implementation of Problem-Based Instruction (PBI) Model For Increasing
Students' Intrinsic Motivation and Learning Achievement in Optic
Instruments Topic at SMA Islam Al-Ulum Terpadu Medan Academic Year
2011-2012. Thesis Department of Physics, Physics Education Studies
Program, Faculty of Mathematics and Natural Science UNIMED 2012.
Fauziatul Fitria (NIM. 408121049)

ABSTRAK
Penelitian tentang penerapan model pembelajaran PBI untuk meningkatkan
motivasi intrinsik dan hasil belajar siswa di SMA Islam Al-Ulum Terpadu Medan
di kelas X dilakukan karena rendahnya hasil belajar pembelajaran fisika,
khususnya dalam menyelesaikan masalah yang dihadapi dalam kehidupan seharihari. Tujuan dari penelitian ini adalah untuk mengetahui peningkatan motivasi
intrinsik dan hasil belajar siswa dari ranah kognitif, afektif dan psikomotorik.
Metode yang digunakan dalam penelitian ini adalah quasi experiments dengan one
group post-test, pre test design. Populasi dalam peneletian ini adalah seluruh
siswa kelas X di SMA Islam Al-Ulum Terpadu Medan. Sampel dalam peneletian
ini adalah siswa kelas X di SMA Islam Al-Ulum Terpadu, Medan tahun ajaran
2011-2012 terdiri dari satu kelas, dengan total siswa 26 siswa dengan random

sampling technic.
Hasil analisis dalam penelitian ini menunjukkan bahwa; (1) peningkatan motivasi
intrinsik berdasarkan rata-rata gain ternormalisasi () setelah menerapkan
model pembelajaran PBI adalah 0,362 dengan kategori medium, dan (2)
peningkatan hasil belajar siswa berdasarkan rata-rata gain ternormalisasi ()
setelah menerapkan model pembelajaran PBI adalah 0.556 pada ranah kognitif,
0,600 pada ranah afektif termasuk ke dalam medium kategori dan 0,722 pada
ranah psikomotorik termasuk pada kategori tinggi.

Implementation of Problem-Based Instruction (PBI) Model For Increasing
Students' Intrinsic Motivation and Learning Achievement in Optic
Instruments Topic at SMA Islam Al-Ulum Terpadu Medan Academic Year
2011-2012. Thesis Department of Physics, Physics Education Studies
Program, Faculty of Mathematics and Natural Science UNIMED 2012.
Fauziatul Fitria (Reg. Number 408121049)

ABSTRACT
Research about implementation of problem-based instruction (PBI) model for
increasing students' intrinsic motivation and learning achievement at SMA Islam
Al-Ulum Terpadu Medan in class X is done because of students‟ law achievement

in physics study, especially in solving of daily life physics problem. These
research objectives are to determine the increasing of intrinsic motivation and
student learning achievement of cognitive, affective and psychomotor domain.
Method of this research is by using quasi experiments with one group post-test,
pre-test design. Populations in this research were all students of grade X in SMA
Islam Al-Ulum Terpadu Medan. The sample in this research are students of grade
X SMA Islam Al-Ulum Terpadu, Medan academic year 2011-2012 consists of
one class, totaling 26 students based on simple random sampling technique.
The results of quantitative analysis in this research show that; (1) improvement of
students' intrinsic motivation based on average gain normalized () after
implement Problem Based Instruction Learning model is equal to 0.362 in a
medium category, and (2) improvement of students‟ learning achievement based
on average normalized gain () after implement Problem-Based Instruction
learning model is 0.556 of cognitive domain, 0.600 of affective domain including
into medium category and 0.722 of psychomotor domain including into high
category.

v

CONTENTS


Legitimating Sheet

Page
i

Biography

ii

Abstract

iii

Acknowledgements

iv

Contents


v

Figures List

viii

Tables List

ix

Appendix List

x

CHAPTER I INTRODUCTION

1

1.1.


Background

1

1.2.

Problems Identification

5

1.3.

Problems Limitation

5

1.4.

Problems Formulation


6

1.5.

Research Objectives

6

1.6.

Benefits of Research

6

CHAPTER II LITERATURE REVIEW

7

2.1.

Learning Definition

7

2.2.

Constructivism Learning Theory

9

2.2.1.

Learning Theory of Jerome Bruner (Discovery Learning)

11

2.3.

Learning Model

13

2.4.

Contextual Teaching and Learning

14

2.4.1.

Problem Based Instruction

15

2.4.2.

Theoretical of Problem Based Instruction (PBI) Model

16

2.4.3.

Characteristic of Problem Based Instruction

17

2.4.4

Advantages of Problem Based Instruction (PBI

18

2.4.5

Disadvantages of Problem Based Instruction (PBI)

18

2.4.6

Schema of the Problem Based Instruction (PBI) Process

19

vi

2.4.7

Teachers’ Roles in PBI

19

2.4.8

Problem-Based Instruction and Higher-Order Thinking

21

2.4.9

Problem Based Instruction Goals

21

2.5

Conventional Learning

21

2.6.

Motivation

22

2.6.1.

Current Theoretical Perspectives on Motivation

23

2.6.2.

Learning Motivation

23

2.6.3.

Techniques to Increase Intrinsic Motivation in Learning

25

2.7.

Learning Achievement

25

2.7.1

Anderson’s Taxonomy of Cognitive Domain

26

2.7.2

Simpson's Taxonomy of Psychomotor Domain

28

2.7.3.

Krathwohl’s Taxonomy of Affective Domain

30

2.8.

Learning Material

32

2.8.1.

Concave Mirrors

32

2.8.2.

Convex Mirrors

32

2.8.3.

Mathematical Method of Locating the Image

33

2.8.4.

Convex and Concave Lenses

33

2.8.5.

Chromatic aberration

34

2.8.6

Eyes

34

2.8.7.

Cameras

35

2.8.8.

Periscope

36

CHAPTER III RESEARCH METHODOLOGY

37

3.1

Location and Time Research

37

3.2

Population and Sample

37

3.3

Research Variables

37

3.4

Method and Research Design

38

3.5

Research Procedure

39

3.6

Research Instruments

42

3.6.1

Tested Instrument

42

3.6.2

Non-Tested Instrument

44

vii

3.7

Content Validity

46

3.8.

Data Collection Technique

46

3.9.

Data Processing Technique

47

3.9.1.

Calculation of Gain Scores Normalized

47

3.9.2.

Data Processing of Students’ Affective Domain

48

3.9.3. Data Processing of Students’ Psychomotor Domain

51

CHAPTER IV RESEARCH RESULT AND DISCUSSION

55

4.1. Instrument Research and Data Analysis

55

4.2. Increasing of Student’ Intrinsic Motivation

55

4.3. Increasing of Student’s Learning Achievement

58

4.3.1. Increasing Student’s Learning Achievement of Cognitive Domains

58

4.3.2. Increasing of Students’ Learning Achievement in Affective Domain 62
4.3.3. Increasing of Students’ Learning Achievement in
Psychomotor Domain

63

CHAPTER V CONCLUSIONS AND RECOMMENDATIONS

66

5.1. Conclusions

66

5.2. Recommendations

66

REFERENCES

129

ix

TABLES LIST
Page
Table 2.1 Comparing of Traditional and Constructivism Classrooms

9

Table 2.3 Anderson’s Taxonomy of Cognitive Domain

27

Table 2.4. Simpson's Taxonomy of the Psychomotor Domain

29

Table 2.5. Krathwohl’s Taxonomy of the Affective Domain

30

Table 3.1 Pretest-posttest, non-equivalent control group design

38

Table 3.2 List of Essay Test for Cognitive Domain

42

Table 3.3 List of Essay Test for Affective Domain

43

Table 3.4 List of Essay Test for Psychomotor Domain

44

Table 3.5 List of Questionnaire for Students’ Learning Intrinsic Motivation 45
Table 3.6 Data Collection Technique

46

Table 3.7 Interpretation of Gain Normalizing Value

48

Table 3.8 Score of Affective Domain

48

Table 3.9 Descriptor of Student’s Affective Domain

49

Table 3.10 Score of Psychomotor Domain

52

Table 3.11 Descriptor of Student’s Psychomotor Domain

52

Table 4.1 Recapitulation of Students’ Intrinsic Motivation

55

Table 4.2 Recapitulation of Students’ Score Increasing in
Intrinsic Motivation for Each Aspect

57

Table 4.3 Recapitulation of Student’s Score Increasing in Cognitive Domain 59
Table 4.4 Recapitulation of Students’ Increasing Score in
Cognitive Domain for Each Aspect

60

Table 4.5 Recapitulation of Students’ Increasing Score in Affective Domain 62
Table 4.6 Recapitulation of Students’ Increasing Score in
Psychomotor Domain

64

viii

FIGURES LIST
Page
Figure 2.1 Kolb’s learning cycle

8

Figure 2.2 Figure 2.2 PBI Process

19

Figure 2.3 Shift in three foci of preoccupation

20

Figure 2.4 Roles of teacher in PBI

20

Figure 2.5 Goals of a PBI problem

21

Figure 2.6 Value and Expectations Model of Motivation Theory

24

Figure 2.7 Image formation by a concave mirror

31

Figure 2.8 Image formation by a convex mirror

32

Figure 2.9 Convex lens

33

Figure 2.10 Concave lens

33

Figure 2.11 Image formation by camera

35

Figure 3.1 Research Procedure Scheme

41

Figure 4.1 Cylinder Diagrams of Average Gain Actual and
N-Gain Students’ Intrinsic Motivation

56

Figure 4.2 Cylinder Diagrams of Average Percentage Gain Actual and
N-Gain Percentage in Intrinsic Motivation for Each Aspect

57

Figure 4.3 Cylinder Diagram of Average Gain Actual and
N-Gain Score Increasing of Cognitive Domain

59

Figure 4.4 Cylinder Diagrams of Average Percentage Gain Actual and
N-Gain Percentage Cognitive Domain for Each Aspect

61

Figure 4.5 Cylinder Diagram of Average Gain Actual and
N-Gain Score Increasing of Affective Domain

63

Figure 4.6 Cylinder Diagram of Average Gain Actual and
N-Gain Score Increasing of Psychomotor Domain

64

x

APPENDIX LIST
Page
Appendix 1 Lesson Plan-1

68

Appendix 2 Lesson Plan-2

75

Appendix 3 Lesson Plan-3

83

Appendix 4 List of Student’s Learning Achievement
In Topic Optic Tools

90

Appendix 5 Answering & Scoring Essay Test

98

Appendix 6 Teacher’s Observation Sheet

104

Appendix 7 Questionnaire of Student’s Intrinsic Motivation

108

Appendix 8 Initial Score of Students’ Intrinsic Motivation

109

Appendix 9 Final Score of Students’ Intrinsic Motivation

110

Appendix 10 Data Analysis of Actual Gain and N-Gain for Student's
Intrinsic Motivation

111

Appendix 11 Data Analysis of Actual Gain and N-Gain for Student's
Intrinsic Motivation of Self-Efficacy Aspect

112

Appendix 12 Data Analysis of Actual Gain and N-Gain for Student's
Intrinsic Motivation of Intrinsic Value Aspect

113

Appendix 13 Data Analysis of Actual Gain and N-Gain for Student's
Intrinsic Motivation of Test Anxiety Aspect

114

Appendix 14 Data Analysis of Actual Gain and N-Gain for
Cognitive Domain

115

Appendix 15 Data Analysis of Actual Gain and N-Gain for
Cognitive Domain of Analysis (C4)

116

Appendix 16 Data Analysis of Actual Gain and N-Gain for
Cognitive Domain of Evaluation (C5) and Create (C6)

117

Appendix 17 Initial Score of Student's Affective Domain by Researcher

118

Appendix 18 Final Score of Student's Affective Domain

119

Appendix 19 Data Analysis of Actual Gain and N-Gain for
Student's Affective Domain

120

Appendix 20 Initial Score of Student's Psychomotor Domain by Researcher 121

xi

Appendix 21 Final Score of Student's Psychomotor Domain

122

Appendix 22 Data Analysis of Actual Gain and N-Gain for
Student's Psychomotor Domain
Appendix 23 Research Documentation

123
124

1

CHAPTER 1
INTRODUCTION

1.1. Background
Physics study up to now is still become a lesson which difficult for most
students to obtain good learning achievement in class. Results of data obtained
during Field Training Program, show that the average value of X grade for
physics class is often the lowest value compared with other lessons. Data of
preliminary observations in SMA Islam Al-Ulum Terpadu Medan, also show that
students average value is below of passing standard score, even based on the
assessment carried out in school, students must master at least basic competence
in classical and individual type above or equal to 75.
The low of student’s learning achievement is caused by various factors,
one of them is because students are less interested in physics, most students in X
grade claimed that they followed lessons of physics only as an obligation.
Although there are some students who are able to understand formulas in physics,
but it is still difficult for them to implement these formulas in daily life, so they
think that physics is not needed to solve various problems in daily life. It can be
concluded that most students are not motivated in learning physics. Teacher who
teach are usually using conventional model, where students in the compulsory to
understand formulas without explaining to students of physics concepts contained
therein and its relationship with other subject matter taught in classroom. In
addition, use of media in learning is also very minimal, so students become very
limited activity.
Learning as a process of activities to change behavior of students has
many factors that influence it. From many factors that affect it, can be broadly
divided into classification of internal factors (from within) of students and
external factors (from out) of students. Internal factors are factors that exist
within of learner, while external factors are factors that exist outside of learner.
These internal factors are: (i) physical factors, (ii) psychological factors, and (iii)

2

fatigue factor (Slameto, 2002:54). The process of teaching-learning interactions
related to internal factors is more focused on the problem of motivation and
reinforcement. These internal factors actually related to physiological factors and
psychological factors. But with reinforcement problem, hence the review about
these internal factors will be devoted to psychological factors. Thomas F. Staton
describes six kinds of psychological factors: motivation, concentration, reaction,
organization, comprehension and repetition (Sardiman, 2011:39). This research is
focus on psychological factors of intrinsic motivation.
Someone will succeed in learning, if in itself there is a desire to learn.
This is the principle and first law in educational activities and instruction
(Sardiman, 2011:40). Based on preliminary observations by giving questionnaire
of motivation to students at SMA Islam Al-Ulum Terpadu Medan obtained data
that most of them have a level of motivation that can be categorized as less.
Factors that can affect students' low motivation in learning physics are: 1) physics
study is made be an abstract lesson , 2) students are not encouraged to understand
the concepts of physics; 3) lack of use of instructional media; 4) interaction
between students is limited.
Uno (2011: 23) reveals that, indicators of motivation to learn can be
classified as follows: 1) the desire abnd willingness to learn, 2) the encourage and
need feeling in learning, 3) the hopes and ambition of the future; 4 ) the
appreciation in learning, 5) the interest activity in learning; 6) the existence of a
conducive learning environment.
When students do not have motivation to learn physics properly, this will
affect their learning achievement, which can be ascertained that results of their
learning achievement will also be low. The problem now is how to find the
appropriate way to convey the various concepts so that students have a long-term
understanding of physics concept and implement it in their daily live and how a
good and wise teacher able to use variety of learning media?
To overcome all problems above, it is required learning innovation that
uses a contextual approach to learning and teaching. The challenge is indeed for
educators to design new learning environments and curricula that really encourage

3

motivation and independence to equip students with learning and problem-solving
skills and competencies that employers are looking for (Tan, 2003: 99). Learning
with a contextual approach (Contextual Teaching and Learning (CTL) links
between the material being taught and students real-world situations and
encourage students to make connections between knowledge that they have and its
implementation in their daily lives is expected to improve student learning
achievement. There are three models of CTL namely: Direct Instruction (DI),
Cooperative Learning (CL) and Problem Based Instruction (PBI). In this research
the model will be applied to Problem Based Instruction (PBI)
PBI is a learning model that presents problem to students before they
construct their knowledge.

The problem presented is problem which always

experienced by students in their daily live.

Through PBI students trained

construct their own knowledge, develop problem solving skills, accustomed in
using media, and used to enhance interaction among students of students, so
students become independent, more confident and have a great motivation in
learning physics.

Meanwhile, Ibrahim reveals that the PBI, teachers try to

encourage students to have intrinsic motivation (Rusmiyati & Yulianto, 2009:75).
In his book of “How to Use Problem-Based Learning in Classroom”, Delisle
reveals that research and teachers’ experience have demonstrated that active
instructional techniques like PBL can motivate bored students and raise their
understanding and achievement (Delisle, 1937: 5).
Some research relating to the use of Problem Based Instruction method
has already been done, among others; by Festiyed 1, Ermawati 2 (2008), where
their reaearch showed that by using PBI in learning can provide an increase in
activity and student’s learning achivement, this thing can seen from average value
of student learning achivement which have increased from 5.7 in Cycle I to 6.09
in cycle II. There is also an increase in value of the lowest in cycle I was 4, in
cycle II, the lowest value obtained 5. Most student’s scores have increase, initially
they received score of 5 and 6 in cycle I, to 6 and 7 in cycle II. Research
conducted by them is classroom action research using cycle model. They also

4

suggested that experiments of this study is more extensive, so as to ascertain how
far this PBI method can increase activity and student learning outcomes.
Then by CA Hapsoro, H. Susanto (2011), where the results of their study
showed that PBI-assisted learning aids can achieve basic competencies of students
and student learning outcomes, in addition, PBI-assisted learning aids are better
than conventional learning, this indicated by students' cognitive learning
outcomes, with average value of 69.3415 in control class, while 73.5238 in
experimental class. Increased learning outcomes in control class by 45% whereas
in experimental class by 52%. The results of this research were obtained by using
two classes as a grade control and experimental classes. Advice given in their
research is aimed to improve the quality of education especially in learning
activities, among others; teacher should consider PBI-assisted learning aids to be
applied, because the learning method is proven improve basic competencies and
student learning outcomes significantly, and also implementation of PBI learning
takes a long time so that the efficiency of time is necessary for the purpose of
learning can be achieved.
Next by Cecepullah (2011), describes the results of his research, among
others; increasing creative thinking abilities of students based on the average
normalized gain () after PBI model is applied at 0.272 to a low category, and
increased student achievement based on the average normalized gain () after
PBI model is applied at 0.271 with low category. The results of this research were
obtained by using the method of quasi-experimental (Quasi Experiment). Advice
given by him in his research are as follows: (1) setting the table on the PBI model
should be quite comfortable to use a group of five to six people and do not hinder
the mobility of teachers, (2) the number of groups is not too much, (3 ) required
further research concerning the application of the PBI model, so as to obtain more
consistent results.
Research about the implementation of PBI model to improve student
motivation and learning achievement conducted at high school of grade X in
Medan. This research is conducted by considering low motivation of students in
learning physics which ultimately have an impact on learning outcomes of

5

students automatically become low. Method of this research is by using quasi
experiments with one group post-test, pre-test design. This method was chosen to
determine the increase of students’s motivation and learning achievement after
applying PBI model compared to before applying PBI model.
Based on

description above, will be conducted research with

title

"Implementation of Problem Based Instruction (PBI) Model For Increasing
Students’ Intrinsic Motivation and Learning Achievement in Optic
Instruments Topic at SMA Islam Al-Ulum Terpadu Medan Academic Year
2011-2012" expected the results could provide benefits for teachers, especially in
providing an alternative model of learning in classroom, particularly in efforts to
improve motivation and student’s learning achievement.

1.2. Problems Identification
Based on description of background above, problem can be identified as
follows:
1. Teacher is usually using conventional model.
2. Most students in X grade at SMA Islam Al-Ulum Terpadu Medan have
low intrinsic motivation in learning physics.
3. Average student learning achievement is below of passing standards.

1.3. Problems Limitation
Problem that developed in this paper should be limited to provide a clear
description of the issues that will be reviewed.

In accordance by problem

identification, problems limitation of this paper are as follows:
1. Using of appropriate learning model to enhance student motivation and
learning outcomes.
2. Students's motivation towards learning physics.
3. Student learning achievement which consits of students' cognitive,
psichomotoric and affective abilities.

6

1.4. Problems Formulation
Based on the problems limitation which described above, hence the
problems formulation in this research are;
1. How the increasing of students' intrinsic motivation after applied
Problem Based Instruction (PBI)?
2. How the increasing of students' learning achievement after applied
Problem Based Instruction (PBI)?

1.5. Research Objectives
Referring to problem formulation, the objectives to be achieved in this
research were to:
1. Knowing the increasing of student’s motivation after been applied
Problem Based Instruction (PBI).
2. Knowing the increasing of student’s learning achievement after been
applied Problem Based Instruction (PBI).

1.6. Benefits of Research


For school: The results of this research are expected to increase the
quality of school as students’ learning achievement and teacher’s



professionalism increase.
For teacher : The results of this research are expected to be input in
expanding knowledge and insight about Problem Based Instruction
(PBI) model in teaching science, that become one of alternative
teaching models as effort to improve student’s motivation and learning



achievement.
For student: The results of this research are expected to increase
students’ learning achievement and intrinsic motivation in learning



physics.
For researcher: The results of this research are expected to be
description of learning model implementation in teaching physics and
increase the quality of researcher writing.

CHAPTER V
CONCLUSIONS AND RECOMMENDATIONS
5.1. Conclusions
Based on data analysis and discussion of research results, obtained
general conclusion that application of Problem Based Instruction learning model
in optic instruments topic has a low criterion in improve students intrinsic
motivation and have sufficient criteria to improve students learning achievement
in cognitive, effective and psychomotor domains. Based on research questions
that presented earlier, we can conclude some of the following:
1. Increasing of students' intrinsic motivation based on average gain
normalized () after implement Problem Based Instruction Learning
model is equal to 0.362 in a medium category.
2. Increasing of students’ learning achievement based on average
normalized gain

() after implement Problem-Based Instruction

learning model is 0.556 of cognitive domain, 0.600 of affective domain
including into medium category and 0.722 of psychomotor domain
including into high category.

5.2. Recommendations
This research is still far from perfect research. Based on the research
results that have conducted, researcher gives the following recommendations:
1. Table and seating arrangement of students have to suitable by the
characteristics of learning model that used. Particularly in PBI learning
model, the shape of table should not elongated and comfortable enough
to used by a group of five to six students. In addition, the position of
tables is not impeding mobility of teacher when guiding students groups.
2. The number of groups should not be too much for teachers for more
maximum control of student activity, especially at investigation stage.
3. Further research is needed of implementation Problem Based Instruction
leaning model in improve students’ intrinsic motivation and learning

achievement at the same subject, to obtain more consistent results
research.
4. For researcher who wants to investigate further more about Problem
Based Instruction (PBI) learning model should pay more attention to the
weaknesses of this learning model to obtain better results.

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ourse_docs/ID_Theory_Reps_Sp04/Bruner-Cherry.pdf
Cecepullah. 2011. Penerapan Model Problem Based Instruction (PBI) terhadap
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BIOGRAPHY
Fauziatul Fitria was born in Medan at 05 Desember 1990. Father‟s name is
Abdul Rajab and Mother‟s name is Dance Pasi. Author is the third daughter from
five brother and sister. On 1996 author entered SD YPI Budi Darma Sidamanik
Pematang Siantar and graduate on 2002. Then, author entered MTs.S Darma
Pertiwi Pematang Siantar and graduate on 2005. Continue study at Madrasah
Aliyah Negeri 1 Medan, author graduate on 2008. On the middle of 2008, author
has been received as student in State University of Medan with study program is
Physics bilingual education, major Physics, Faculty of Mathematics and Nature
Science.