• Tidak ada hasil yang ditemukan

A COMPARATIVE STUDY OF READING COMPREHENSION ACHIEVEMENT BETWEEN STUDENTS TAUGHT THROUGH COLLABORATIVE STRATEGIC READING AND TAUGHT THROUGH SELF-QUESTIONING STRATEGY AT THE FIRST YEAR STUDENTS OF SMAN 8 BANDAR LAMPUNG

N/A
N/A
Protected

Academic year: 2017

Membagikan "A COMPARATIVE STUDY OF READING COMPREHENSION ACHIEVEMENT BETWEEN STUDENTS TAUGHT THROUGH COLLABORATIVE STRATEGIC READING AND TAUGHT THROUGH SELF-QUESTIONING STRATEGY AT THE FIRST YEAR STUDENTS OF SMAN 8 BANDAR LAMPUNG"

Copied!
211
0
0

Teks penuh

(1)

ABSTRACT

A COMPARATIVE STUDY OF READING COMPREHENSION

ACHIEVEMENT BETWEEN STUDENTS TAUGHT THROUGH

COLLABORATIVE STRATEGIC READING AND TAUGHT THROUGH

SELF-QUESTIONING STRATEGY AT THE FIRST YEAR STUDENTS OF

SMAN 8 BANDAR LAMPUNG

By

Romandani Adyan

In reading, the students need an appropriate technique that is suitable with the

types of texts. Thus, according to School Based Curriculum 2006, Junior High

School students use functional texts as their reading materials. To make students’

reading process more effective, the technique used is important to consider. In this

case, the researcher tried to compare Collaborative Strategic Reading and

Self-Questioning Strategy for teaching reading..

The objectives of the research are to find out whether there is a significant

difference on reading comprehension achievement between students who are

taught through Collaborative Strategic Reading and those who are taught through

Self-Questioning Strategy and to find out which one is more effective technique.

The research was conducted at SMA Negeri 8 Bandar Lampung. This research ia

a quantitative research using true experimental design. The sample was chosen

randomly through lottery. The data was gained by administering a set of pretest

and posttest to both classes. The treatments were conducted in both classes. The

data was analyzed by using Statistical Package for Social Science (SPSS) version

17.0. the hypotesis was tested by using Independent Group t-test.

(2)
(3)

CURRICULUM VITAE

(4)

DEDICATION

By offering my praise and gratitude to Allah SWT for His abundant blessing to

me,

I’d proudly dedicate this piece of work to:

My beloved Parents, A. Rais Adyan and Asteratu

My beloved brothers, Haryadi Adyan and Rizki Saputra Adyan

My musical tutors, Uri A. Putra, David Tarigan and Arian Arifin

My fabulous friends of English Department

(5)

MOTTO

We change our opinion,

We change our years,

We change our pencils,

We change our dreams

We change our ladies,

Cars and money…

But we never change our

Friends

-Al Capone-

Keep calm, worry less, smile more and carry on

(6)

ACKNOWLEDGEMENT

Praise is merely to Allah SWT for his blessing and mercy that the writer is

enabled to

accompalished this script entitled “

A comparative study of reading

comprehension achievement between students taught through collaborative

strategic reading and taught through self-questioning strategy at the first year

students of SMA Negeri 8 Bandar Lamp

ung”

. This script is submitted as a

compulsory fulfillment of the requirements for S1 degree of English Education

Study Program at Teacher Training and Education Faculty, University of

Lampung.

Gratitude and honor are addressed to all persons who helped and supported the

writer completed this script. Here, the writer would like to acknowledge his

sincere gratefulness to H. Ujang Suparman, M. A., Ph.D., as his first advisor,

Deddy Supriyadi, M.Pd., as his second advisor, and Dr. M. Sukirlan, M.A., as his

examiner who assist, guided, encourage and gave knowledge to accomplish the

script.

My thankfulness is also due to Drs. Banjir Sihite, M.Pd., the Headmaster of SMA

Negeri 8 Bandar Lampung and Martalinda, S.Pd., the English teacher of SMA

Negeri 8 Bandar Lampung, whereby the writer did his research, and all beloved

students of class X5 and X6 for their participation in this research.

The writer also would like to thank his

beloved friends of NERD‘07, especially

Lala, Sisil, Ayu, Dini, Diki, Dian, Fery, Rio, Dery, Ganis, Ike, Niky, Astiti, Silka,

Didi, Rini, Fevi, Nurul, Mey, Fetris, Joko, Reni, Umi, Wildan, Karisma, Azis,

Nopri, Rudy, Rahmat, Lisa, Desti, Lia, Decin, Delia, Lilis, Ratih, Zie, Na, Cia,

Nyimas, Mprit, Endah, Hadi, Rahmat, Sih, Egra, Siti, Esy, Asti & the

late-Akhirman. Moreover, he must thank his seniors and juniors; Mba Ari, Mas Arik,

Bang Jaka, Yudi, Mirwan, Wira, Iyra, Yussi, Ratih & Tacca; thank you so much

for being such a great companion along the way in finishing this holy script.

I actually realize that this script has many weaknesses in certain ways thus

suggestion are expected to make better paper in the future.

Bandar Lampung,

May 2012

(7)

I. INTRODUCTION

This chapter discusses introduction of the research which deals several points. i.e.,

background of the problem, identification of problems, limitation of the problems,

formulation of the problems, objectives of the research, significances of the research,

and scope of the research.

1.1

Background of the Problem

English, as an international language, is used in many fields all over the world. It is

also a fact that English is widely needed by people, for example to transfer new

modern science, technology, and information. Transferring new modern science,

technology, and information can be done through reading process. Based on these

facts the writer considers that reading is a very important skill in order to increase our

knowledge and way of thinking. Regarding its importance, the government of

Indonesia decided to put English as a compulsory subject because English is

considered as the first foreign language.

There are four skills of language to be mastered in learning English, i.e. listening,

speaking, reading, and writing. Based on the reason that the students are expected to

read information which are mostly written in English, reading dominates the teaching

(8)

III. RESEARCH METHODS

This part discusses the design of this research and how to collect the data from the

samples. The writer encloses the data collecting technique and the procedures of this

research. The writer also gives the scoring system and how the data will be analyzed.

3.1 Research Design

To conduct this research, the researcher used

Control

Group Pretest Posttest Design

.

This design belonged to true experimental designs. True experimental designs have

three basic characteristics: (1) a comparison group is present, (2) The sample are

randomly selected and assigned to the groups, and (3) a pretest is administered to

capture the initial differences between the groups (Hatch and Farhady 1982:22).

The researcher used this design because he wanted to give special treatment to the

experimental class one using collaborative strategic reading in teaching reading

comprehension. There were two classes of this experimental study; experimental

class one which get treatment through collaborative strategic reading and another as a

experimental class two which get treatment through self-questioning strategy.

(9)
(10)

A COMPARATIVE STUDY OF READING COMPREHENSION

ACHIEVEMENT BETWEEN STUDENTS TAUGHT THROUGH

COLLABORATIVE STRATEGIC READING AND TAUGHT THROUGH

SELF-QUESTIONING STRATEGY AT THE FIRST YEAR STUDENTS

OF SMAN 8 BANDAR LAMPUNG

(A Script)

By

ROMANDANI ADYAN

UNIVERSITY OF LAMPUNG

BANDAR LAMPUNG

(11)

A COMPARATIVE STUDY OF READING COMPREHENSION

ACHIEVEMENT BETWEEN STUDENTS TAUGHT THROUGH

COLLABORATIVE STRATEGIC READING AND TAUGHT THROUGH

SELF-QUESTIONING STRATEGY AT THE FIRST YEAR STUDENTS

OF SMAN 8 BANDAR LAMPUNG

By

ROMANDANI ADYAN

A Script

Submitted in a Partial Fulfillment of

The requirement for S-1 Degree

In

The Language and Arts Department of

The Faculty of Teacher Training and Education

UNIVERSITY OF LAMPUNG

BANDAR LAMPUNG

(12)

Research Title

: A COMPARATIVE STUDY OF READING

COMPREHENSION ACHIEVEMENT BETWEEN

STUDENTS TAUGHT THROUGH

COLLABORATIVE STRATEGIC READING AND

TAUGHT THROUGH SELF-QUESTIONING

STRATEGY AT THE FIRST YEAR STUDENTS OF

SMAN 8 BANDAR LAMPUNG

Student’s Name

: Romandani Adyan

Student’s Number

: 0713042042

Department

: Language and Arts Education

Study Program

: English Education

Faculty

: Teachers Training and Education

APPROVED BY

Advisory Committee

Advisor

Co-Advisor

H. M.U. Suparman, M. A., Ph.D. Drs. Dedy Supriyadi, M.Pd.

NIP 19570608 198603 1 001 NIP 19580505 198502 1 001

The Head of Language and Arts Education Department

(13)

ADMITTED BY

1.

Examination Committee

Chairperson

: H. M.U. Suparman, M. A., Ph.D.

……….

Examiner

: Dr. Muhammad Sukirlan, M. A.

………

Secretary

: Drs. Dedy Supriyadi, M.Pd.

……….

2.

The Dean of Teachers Training and Education Faculty

Dr. H. Bujang Rahman, M.Si.

NIP 19600315 198503 1 003

(14)

A COMPARATIVE STUDY OF READING COMPREHENSION

ACHIEVEMENT BETWEEN STUDENTS TAUGHT THROUGH

COLLABORATIVE STRATEGIC READING AND TAUGHT THROUGH

SELF-QUESTIONING STRATEGY AT THE FIRST YEAR STUDENTS

OF SMAN 8 BANDAR LAMPUNG

(A Script)

By

Romandani Adyan

0713042042

Advisors :

H. M. Ujang Suparman, M.A., Ph.D.

Dedy Supriyadi, M.Pd.

ENGLISH EDUCATION PROGRAM

LANGUAGE AND ARTS EDUCATION DEPARTMENT

TEACHER TRAINING AND EDUCATION FACULTY

(15)

1

I. INTRODUCTION

This chapter discusses introduction of the research which deals several points. i.e.,

background of the problem, identification of problems, limitation of the

problems, formulation of the problems, objectives of the research, significances of

the research, and scope of the research.

1.1

Background of the Problem

English, as an international language, is used in many fields all over the world. It

is also a fact that English is widely needed by people, for example to transfer new

modern science, technology, and information. Transferring new modern science,

technology, and information can be done through reading process. Based on these

facts the writer considers that reading is a very important skill to increase our

knowledge and way of thinking. Regarding its importance, the government of

Indonesia decided to put English as a compulsory subject because english is

considered as the first foreign language.

There are four language skills to be mastered in learning English, i.e. listening,

speaking, reading, and writing. Based on the reason that the students are expected

to read information which are mostly written in English, reading dominates the

(16)

2

In the guideline of School Based Curriculum, KTSP (Depdiknas, 2006:297), It is

stated that there are several objectives of teaching reading for the first grade of

Senior High School, They are:

1.

The students are able to identify the main idea of the whole texts or in each

paragraph of reading texts.

2.

The students are able to identify the vocabularies of reading texts

3.

The students are able to identify some specific information of reading

texts.

According to th

e writer’s experience when he

did the field practice program, it

was found that most of students could not achieve those mentioned objectives as

they were supposed to be. This condition may be due to a number of factors such

as lack of vocabulary, inappropriate use of media, ineffective strategy used by the

teacher, and the minimum availability of learning facilities. Those factors are

dependent on each other and affect the process of reading. Due to this condition,

the researcher focused on one of those factors i.e., the strategy. As it was found

that the teachers in the school do not teach reading comprehension using an

appropriate strategy to help the students understand reading comprehension easier.

Based on KTSP, there are many kinds of English texts. In this research, the

researcher will focus on narrative text because narrative text is one of reading text

that is mostly used in the reading test. This is a simple text but many students in

the first year of senior high school do not really comprehend this sort of text. They

still have difficulty to find the main idea and specific information of narrative text.

As a matter of fact, reading can be taught through collaborative strategic reading.

This Strategy was firstly introduced by Klingner & Vaughn (1999). Teacher can

(17)

3

this strategy, the students will be brought into an interesting situation and

enjoyable situation so that the students will be easier to comprehend the meaning

and find out the main idea of the text.

In the same line with collaborative strategic reading, self-questioning strategy also

has been widely accepted as one of the strategy that can be applied to present

materials in classroom. With this strategy, the students are supposed to be able to

read a reading passage in the target language into the students’ native language.

Considering the two strategies above that can be used for teaching reading, the

writer want to see the difference by comparing

Collaborative stategic reading

and

Self-Questioning Strategy

for teaching reading.

1.2

Identification of the Problems

Based on the background above, the researcher identifies the problem on SMAN 8

Bandar Lampung as follows:

1.

The students get difficulties in comprehending the reading text. They get

difficulties in getting information from the text, finding the main idea,

finding the details, answering to the questions based on the text and

making inference from the text. As the results the students got difficulties

in retelling or in transferring the information from the text.

2.

The students are not aware of the appropriate technique of reading which

are needed to be applied in various types of text they interact. The result is

(18)

4

3.

The students’ motivations in learning English are still low. So it is difficult

to improve their English ability well.

4.

The students have no good self confidence in learning English. So it is

difficult for them to learn English well because they regard that English is

difficult to be learnt well.

5.

The teachers use inappropriate technique in teaching English. So it is

difficult in helping students understand reading comprehension.

1.3 Limitation of the Problem

In line with the identification of the problems, the researcher realizes his

capability in doing his research. Therefore, he will focus his study only on the

students’ difficulties in comprehending the reading text because of inappr

opriate

strategy in reading.

1.4 Formulation of the Problem

Based on the limitation of the problem above, the researcher formulates the

problems as follows:

1.

Is there any difference of reading comprehension achievement between the

students who are taught through

Collaborative stategic reading

and those

who are taught through

Self-questioning Strategy

at the first year of

SMAN 8 Bandar Lampung?

2.

Which strategy is more effective to help students improve their reading

(19)

5

1.5 Objectives of the Research

In relation to the research problem above, the objectives of this research are:

1.

to investigate whether there is any difference of reading comprehension

achievement between the students who are taught through

Collaborative

stategic reading

and those who are taught through

Self-Questioning

Strategy

at the first year of SMAN 8 Bandar Lampung.

2.

to determine which strategy that is more effective to help students improve

their reading comprehension between the two techniques.

1.6 Significances of the Research

The results of this study are expected to be beneficial both theoretically and

practically as follows:

1.

Theoretically

The results of the research are expected to support previous theories

dealing with

Collaborative Strategic Reading

and

Self-Questioning

Strategy.

2.

Practically

The results of this research are expected to give information to the English

teachers, especially of senior high school in order to select the most

suitable technique in teaching reading comprehension.

1.7 Scope of the Research

This research was

conducted to increase the students’ reading comprehension of

(20)

6

research were

collaborative strategic reading

in experimental class one and

self-questioning strategy

in experimental class two. The classes as the sample were

selected using simple random sampling. The classes were selected randomly by

using lottery, since the first year students in SMAN 8 Bandar Lampung was not

stratified class. The researcher focused on narrative text. The materials are taken

from English Book based on the School Based Curriculum (KTSP) of SMA.

To

find

out the improvement of students’ reading comprehension, the re

searcher

measured the score of a set of pre-test and post-test.

1.8 Definition of Terms

There are some terms used by the writer and to make it clear, the writer will gave

some definitions as follow:

1.

Reading Comprehension

is defined as an active cognitive process of

interacting with print and monitoring comprehension to establish the

meaning.

2.

Collaborative Strategic Reading

is a collaborative technique that teaches

students to use comprehension strategies while working cooperatively

including previewing the text; giving ongoing feedback by deciding "click" (I

get it) or "clunk" (I don't get it) at the end of each paragraph; "getting the

gist" of the most important parts of the text; and "wrapping up" key ideas.

3.

Self-questioning

is a set of steps that students follow to generate, think about,

predict, investigate, and answer the questions that satisfy curiosity from what

(21)
(22)

1

I. INTRODUCTION

This chapter discusses introduction of the research which deals several points. i.e.,

background of the problem, identification of problems, limitation of the

problems, formulation of the problems, objectives of the research, significances of

the research, and scope of the research.

1.1

Background of the Problem

English, as an international language, is used in many fields all over the world. It

is also a fact that English is widely needed by people, for example to transfer new

modern science, technology, and information. Transferring new modern science,

technology, and information can be done through reading process. Based on these

facts the writer considers that reading is a very important skill to increase our

knowledge and way of thinking. Regarding its importance, the government of

Indonesia decided to put English as a compulsory subject because english is

considered as the first foreign language.

There are four language skills to be mastered in learning English, i.e. listening,

speaking, reading, and writing. Based on the reason that the students are expected

to read information which are mostly written in English, reading dominates the

(23)

2

In the guideline of School Based Curriculum, KTSP (Depdiknas, 2006:297), It is

stated that there are several objectives of teaching reading for the first grade of

Senior High School, They are:

1.

The students are able to identify the main idea of the whole texts or in each

paragraph of reading texts.

2.

The students are able to identify the vocabularies of reading texts

3.

The students are able to identify some specific information of reading

texts.

According to th

e writer’s experience when he

did the field practice program, it

was found that most of students could not achieve those mentioned objectives as

they were supposed to be. This condition may be due to a number of factors such

as lack of vocabulary, inappropriate use of media, ineffective strategy used by the

teacher, and the minimum availability of learning facilities. Those factors are

dependent on each other and affect the process of reading. Due to this condition,

the researcher focused on one of those factors i.e., the strategy. As it was found

that the teachers in the school do not teach reading comprehension using an

appropriate strategy to help the students understand reading comprehension easier.

Based on KTSP, there are many kinds of English texts. In this research, the

researcher will focus on narrative text because narrative text is one of reading text

that is mostly used in the reading test. This is a simple text but many students in

the first year of senior high school do not really comprehend this sort of text. They

still have difficulty to find the main idea and specific information of narrative text.

As a matter of fact, reading can be taught through collaborative strategic reading.

This Strategy was firstly introduced by Klingner & Vaughn (1999). Teacher can

(24)

3

this strategy, the students will be brought into an interesting situation and

enjoyable situation so that the students will be easier to comprehend the meaning

and find out the main idea of the text.

In the same line with collaborative strategic reading, self-questioning strategy also

has been widely accepted as one of the strategy that can be applied to present

materials in classroom. With this strategy, the students are supposed to be able to

read a reading passage in the target language into the students’ native language.

Considering the two strategies above that can be used for teaching reading, the

writer want to see the difference by comparing

Collaborative stategic reading

and

Self-Questioning Strategy

for teaching reading.

1.2

Identification of the Problems

Based on the background above, the researcher identifies the problem on SMAN 8

Bandar Lampung as follows:

1.

The students get difficulties in comprehending the reading text. They get

difficulties in getting information from the text, finding the main idea,

finding the details, answering to the questions based on the text and

making inference from the text. As the results the students got difficulties

in retelling or in transferring the information from the text.

2.

The students are not aware of the appropriate technique of reading which

are needed to be applied in various types of text they interact. The result is

(25)

4

3.

The students’ motivations in learning English are still low. So it is difficult

to improve their English ability well.

4.

The students have no good self confidence in learning English. So it is

difficult for them to learn English well because they regard that English is

difficult to be learnt well.

5.

The teachers use inappropriate technique in teaching English. So it is

difficult in helping students understand reading comprehension.

1.3 Limitation of the Problem

In line with the identification of the problems, the researcher realizes his

capability in doing his research. Therefore, he will focus his study only on the

students’ difficulties in comprehending the reading text because of inappr

opriate

strategy in reading.

1.4 Formulation of the Problem

Based on the limitation of the problem above, the researcher formulates the

problems as follows:

1.

Is there any difference of reading comprehension achievement between the

students who are taught through

Collaborative stategic reading

and those

who are taught through

Self-questioning Strategy

at the first year of

SMAN 8 Bandar Lampung?

2.

Which strategy is more effective to help students improve their reading

(26)

5

1.5 Objectives of the Research

In relation to the research problem above, the objectives of this research are:

1.

to investigate whether there is any difference of reading comprehension

achievement between the students who are taught through

Collaborative

stategic reading

and those who are taught through

Self-Questioning

Strategy

at the first year of SMAN 8 Bandar Lampung.

2.

to determine which strategy that is more effective to help students improve

their reading comprehension between the two techniques.

1.6 Significances of the Research

The results of this study are expected to be beneficial both theoretically and

practically as follows:

1.

Theoretically

The results of the research are expected to support previous theories

dealing with

Collaborative Strategic Reading

and

Self-Questioning

Strategy.

2.

Practically

The results of this research are expected to give information to the English

teachers, especially of senior high school in order to select the most

suitable technique in teaching reading comprehension.

1.7 Scope of the Research

This research was

conducted to increase the students’ reading comprehension of

(27)

6

research were

collaborative strategic reading

in experimental class one and

self-questioning strategy

in experimental class two. The classes as the sample were

selected using simple random sampling. The classes were selected randomly by

using lottery, since the first year students in SMAN 8 Bandar Lampung was not

stratified class. The researcher focused on narrative text. The materials are taken

from English Book based on the School Based Curriculum (KTSP) of SMA.

To

find

out the improvement of students’ reading comprehension, the re

searcher

measured the score of a set of pre-test and post-test.

1.8 Definition of Terms

There are some terms used by the writer and to make it clear, the writer will gave

some definitions as follow:

1.

Reading Comprehension

is defined as an active cognitive process of

interacting with print and monitoring comprehension to establish the

meaning.

2.

Collaborative Strategic Reading

is a collaborative technique that teaches

students to use comprehension strategies while working cooperatively

including previewing the text; giving ongoing feedback by deciding "click" (I

get it) or "clunk" (I don't get it) at the end of each paragraph; "getting the

gist" of the most important parts of the text; and "wrapping up" key ideas.

3.

Self-questioning

is a set of steps that students follow to generate, think about,

predict, investigate, and answer the questions that satisfy curiosity from what

(28)
(29)

7

II. FRAME OF THEORIES

This chapter discusses frame of theories that deals with several points. i.e., review of

the previous research, concept of reading, concept of teaching reading, concept of

Collaborative Strategic Reading, procedure of teaching reading through

Collaborative Strategic Reading, concept of Self-Questioning Strategy, procedure of

teaching reading through Self-Questioning Strategy, theoretical assumption, and

hypothesis.

2.1 Review of Previous Research

There had been several studies proving that collaborative strategic reading is an

effective strategy for reading comprehension. Klingner & Vaughn (1999) conducted

a series of studies to determine the effectiveness of collaborative strategic reading. In

their experiment, the improvements were reflected in the regular classroom as the

experimental students' percentile rankings and also yielded positive outcomes for

average and high average achieving students.

Another research relating to collaborative strategic reading was done by Nisa (2009).

The aim of her study was to find out the students’ reading comprehension

achievement after learning reading using collaborative strategic reading. One class of

second year students of SMPN 1 Punggur was chosen as the sample. Three times

treatment using collaborative strategic reading was given to the chosen class in three

(30)

8

employed to obtain the data. Based on the calculation of the t-test, the result shows

that there is a significant increase on students’ reading comprehension achievement

after learning reading using collaborative strategic reading (p<.05, p=.000).

Meanwhile, There also had been several studies proving that self-questioning

strategy can improve students reading comprehension. One of it had been done by

Fetrisia (2011) at MA Ma’Arif 4 Kalirejo

, she made an experiment using

self-questioning strategy

to investigate whether it might increase students’ reading

comprehension.

She found the students’

mean scores within experimental class

increased significantly. She convinces that self-questioning strategy carries benefits

toward students’ reading comprehension.

In conclusion based on the explanation above, the researcher would like to propose

the research by comparing the two techniques that had been proven can increase

students reading comprehension achievements. Moreover this research was intended

to find out which one of the two techniques or strategy that is more effective and

relevant to be applied in teaching reading at senior high school.

2.2 Concept of Reading

Reading is the process of constructing meaning from text. The goal of all reading

instruction is ultimately targeted at helping a reader comprehend text. Reading

comprehension involves at least two people: the reader and the writer. The process of

comprehending involves decoding the writer's words and then using background

(31)

9

Smith (1982) says that reading certainly implies comprehension, and reading is

something that makes sense to the reader. The readers try to understand and get the

meaning and information in the written texts in form of symbols, letters, graphs, etc.

Thus, they grasp the writers’ messages from the texts.

Meanwhile Nuttal (1985) defines reading as the meaningful interpretation of printed

or written symbols. It means that reading is a result of the interaction between the

perception of graphic symbols that represent language and the reader’s language

skills, cognitive skills and the knowledge of the world. In this process, the reader

tries to recreate the meaning intended by the writer.

In addition, Howart (2006) says that reading is just as communicative as any other

form of language. It means that in reading there is an interaction between the writer

and the readers through the texts. The writer tries to encode the messages to the

readers. Then the readers try to decode the messages that sent by the writer.

Carver (1990) defines reading as a complex cognitive process of decoding symbols

for the intention of deriving meaning (reading comprehension) and/or constructing

meaning. Reading is also a means of language acquisition, of communication, and of

sharing information.

According to Doyle (2004), comprehension is a progressive skill in attaching

meaning beginning at the same level and proceeding to attaching meaning to an

entire reading selection. All comprehension revolves around the reader’s ability in

(32)

10

From all the theories, it can be concluded that reading is an active process of getting

meaning or information from printed or written language transferred by the writer

whereas reading comprehension is the level of passage or text understanding while

reading. Comprehension occurs when readers are able to understand, remember,

retell and discuss with others about what they have read.

2.3 Concept of Teaching Reading

The aim of teaching reading is to develop students’ skills

so that they can read

English texts effectively. To be able to do so the readers should have particular

purposes in their mind before they interact with the texts. Effective and efficient

reading is always purposeful and tends to focus mainly on the purpose of the activity.

Then the purpose of reading is implemented into the development of different

reading techniques. These can be achieved when the students read and interact with

various types of texts, i.e. functional and monologue texts.

In term of teaching reading Alyousef (2005: 143) says that in reading, contemporary

reading tasks, unlike the traditional materials, involve three-phase procedures: pre-,

while-, and last-reading stages. The pre-reading stage helps in activating the relevant

schema. For example, the teachers can ask students questions that arouse theirs

interest while previewing the text. The aim of while-reading stage (or interactive

process) is to develop students’ ability in tackling texts by developing their linguistic

and schematic knowledge. The last-reading includes activities, which enhance

learning comprehension using exercises, cloze exercises, cut-up sentences, and

(33)

11

One aspect that becomes essential in students’ reading is the reading technique. It has

d

irect “link” in comprehension and strategy or technique. The writer assumes that

reading comprehension is students’ competence in comprehending the specific

information, words and surface meaning in texts is described by students’ score with

an appropriate technique.

In short, in teaching reading the teacher should provide strategy to the students with

purpose for reading to anticipate different type of reading texts. Therefore, reading

technique should be matched to reading purpose to read efficiently and effectively.

As Suparman (2005) states that there are two major reasons for reading (1) reading

for pleasure; (2) reading for information (in order to find out something or in order to

do something with the information readers get). The researcher assumed that in

teaching reading, appropriate and possible strategy should be applied based on the

purpose of reading in order to get the comprehension. They use reading strategy to

make their reading efficient and effective.

2.4 Concept of Collaborative Strategic Reading

Collaborative strategic reading (CSR) is a technique that isfirstly proposed by

Klingner & Vaughn in 1999. They say that to help students to master the reading

skill a teacher may use CSR in teaching reading because this method is considered

effective to be implemented. This technique emphasizes in making the students have

the skill to comprehend the text clearly and quickly. They can try to use some steps

in this technique such as, preview, click and cluck, get the gist and wrap up. It means

that to help the students in reading process, the teacher may offer this technique by

(34)

12

CSR teaches students to work collaboratively and learn different viewpoints of

reading content from fellow students. By working together students of different

reading abilities are given the opportunity to contribute to their group. The students

may also strengthen their self-esteem through participation of the discussions. It is

important for students to learn from one another. Studies have shown that social

development is directly correlated with academic progress

.

As students work

together, they are offered the benefit of understanding a topic on a level more suited

to their aptitude of understanding. Students are assigned roles in CSR lessons that

they must fulfill together. Roles are an important aspect of CSR strategy because

cooperative learning seems to work best when all group members have been assigned

in a meaningful task. Studies in CSR have shown that students that work together in

collaborative groups are more successful in their reading comprehension. Students

are also encouraged to promote a more positive classroom environment as regular

education students and special education students socially interact with one another.

Although CSR is designed to be used with expository text, it can also be used with

narrative text. The goals of CSR are to improve reading comprehension and increase

conceptual learning in ways that maximize students' involvement. CSR has also

yielded positive outcomes for average and high average achieving students

(Klingner, Vaughn, & Schumm, 1999. Theoretically, Collaborative Strategic

Reading (CSR) itself can build the students’ interest and motivation before students

(35)

13

2.5 Procedures of Teaching Reading through CSR

CSR can be implemented in two phases: (a) teaching the strategies, and (b)

cooperative learning group activity or student pairing. The implementation steps

described below were developed through a series of studies (Klingner, 1998).

A.

Phase 1: Teaching the Strategies

Students learn four strategies: preview, click and clunk, get the gist, and wrap up.

Preview is used before reading the entire text for the lesson, and wrap up is used after

reading the entire text for the lesson. The other two strategies, click and clunk and

get the gist, are used multiple times while reading the text, after each paragraph.

a.

Previewing

Preview is the first step. It means that before reading, students look through the

whole text. When students preview before reading, they should look at headings;

words that are bolded or underlined; and pictures, tables, graphs, and other key

information to help them do two things: brainstorming what they know about the

topic and predicting what they will learn about the topic. Just as in preview, students

are provided minimal time to generate their ideas and their predictions

b.

Clicking and Clunking

The second step is Click and Clunk. In this step, the students learn to monitor their

understanding during reading. Clicks refer to portions of the text that make sense to

the reader . In other word comprehension clicks into place as the reader proceeds

(36)

14

down, for example when students find words or word parts that were hard to

understand.

A sequence of "fix-up strategies" was used to decode the "clunk." The strategies are:

 (a) re-reading the sentence for key ideas,

 (b) looking for context clues in the sentences before and after,

 (c) looking for prefixes or suffixes, and

 (d) breaking the word apart to find smaller words.

c. Getting the gist

The next step is Get the gist. In this step, students identify the most important idea in

a section of text (usually a paragraph). The goal of getting the gist is to teach students

to re-state in their own words. The most important point as a way of making sure

they have understood what they have read. Get the gist can be taught by focusing on

one paragraph at a time. While students read the paragraph, the teacher asks them to

identify the most important person, place, or thing. Then the teacher asks students to

tell what is most important about the person, place, or thing. Finally, the teacher

teaches students to put it all together in a sentence containing ten words or less.

d. Wrapping up

The last step is Wrap up. After reading, students construct their own questions to

check for understanding of the passage, answer the questions, and summarize what

has been learned. The goals are to improve students' knowledge, understanding, and

memory of what was read. Wrap up is a strategy that teaches students to generate

questions and to review important ideas in the text they have read. Wrap up consists

of two activities: (a) generating questions, and (b) reviewing. A teacher initially

(37)

15

think of questions they would ask on a test. The teacher suggests the following

question starters: who, what, when, where, why, and how. The teacher also

encourages students to generate some questions that require an answer involving

higher-lever thinking skills, rather than literal recall.

B.

Phase 2: Cooperative Learning Group or Student Pairing

Once students have learned the four strategies (

preview, click and clunk, get the gist,

and

wrap up

) and have developed proficiency applying them in teacher-led activities,

they are supposed to apply CSR in their peer-led cooperative learning groups. Some

teachers find it easier to have students work in pairs, and that has also proven to be a

successful practice. Procedures for using these strategies with groups are outlined

below.

a.

Setting the stage

First, the teacher assigns students to groups. Each group should include about four

students of varying ability. Then, the teacher assigns roles to students. Roles should

rotate on a regular basis so that students can experience a variety of roles. Possible

roles include the following:

1.

Leader

: Tells the group what to read next and what strategy to use next.

2.

Clunk Expert

: Uses clunk cards to remind the group of the steps to follow when

trying to figure out the meaning of their clunk(s).

3.

Gist Expert

: Guides the group toward getting the gist and determines that the gist

contains the most important idea(s) but no unnecessary details.

(38)

16

b.

Process

The basic steps to apply CSR in a cooperative learning group are as follows:

1.

Step 1: Whole class introduction. The teacher introduces the topic, teaches key

vocabulary, and provides instructions.

2.

Step 2: Cooperative group activity during preview, click and clunk, get the gist,

and wrap up.

3.

Step 3: Whole class wrap up strategy. A teacher discusses the day’s reading

passage, reviews clunks, answers questions, or shares some review ideas.

c.

Role of the teacher

During the cooperative group activity

the teacher’s role is to circulate among the

groups, clarifying clunks, modeling strategy usage, modeling cooperative learning

techniques, redirecting students to remain on-task, and providing assistance.

Based on the stages mentioned above, the researcher took the general procedure of

teaching reading comprehension using CSR during her research. The researcher runs

each treatment through the following steps:

1.

Before reading

a.

Previewing

1.

Brainstorm: What do we already know about the topic?

2.

Predict: What do we think we will learn about the topic when we read?

2. During reading

b.

Clicking and Clunking

1.

Were there any parts that were hard to understand (clunk)?

2.

How can the clunk be fixed?

(39)

17

a.

Reread the sentence and look for key ideas to help you understand the word.

b.

Reread the sentence with the clunk and the sentence before and after the

clunk. Look for clues.

c.

Look for prefix and suffix in the word.

d.

Break the word apart and look for smaller word.

c.

Getting the Gist

1.

What is the most important person, place, or thing?

2.

What is the most important idea about person, place, or thing?

3.

After reading

d.

Wrapping Up

1.

Ask questions: What question would show we understand the most

important information? What are the answers to these questions?

2.

Review: What did we learn?

2.6 Concept of Self-Questioning Strategy

Self-questioning is simply a process in which students ask and answer questions

before, while and after reading. Strategically asking and answering questions before,

while and after reading helps students with difficulties engage with text in ways that

good readers do naturally, thus “improving their active processing of text and their

comprehension” (Natio

nal Reading Panel, 2003:51). Self-Questioning Strategy is

also to help focus their own attention on selecting appropriate information and to

monitor their own understanding. Good readers are actively involved in the reading

(40)

18

Self-questioning strategy focuses on knowledge acquisition and concept

comprehension by learner generating questions. This strategy slows down the

reading process, focuses students’ attention on details in the text, and makes them

aware of gaps in the story and/or breaches with their own expectation (Janssen,

2002). This strategy may promote students’ personal engagement in reading. By

generating questions, students actively and purposefully engage in the reading and

comprehending the text. Some general questions that can be asked as an example of

how self-

questioning is used are: “

What do I already to know?

”, this is a question

that would be asked before the task begins, “

Do I understand what is going on this

far?

”, this is effective to ensure comprehension during the task, and finally, “

What

new information did I learn?

”, this can be asked after the task is complete.

Meanwhile, according to Lenz (2005), self questioning requires a reader to look for

text clues that make them wonder, think about possible meanings, ask questions

about the meanings, make predictions about the answers, read to find the answers,

evaluate the answers and their predictions, and reconcile differences between their

questions, their predictions about answers, and the information actually provided by

the author in the text.

It seems that self-

questioning as an active strategy to increase the readers’ reading

ability; the active processing theory posits that since readers have to interact with the

text longer and more deeply, in order to formulate questions about it, they develop

deeper understanding and longer retention of the text (Singer, 1978).

Considering the statement above, it can be inferred that self-questioning is more than

(41)

19

textual clues that they found in the text. Then the students use their background

knowledge to generate questions and make predictions based on the clues.

2.7 Procedures of Teaching Reading through Self-Questioning Strategy

the steps of teaching reading through self-questioning strategy are:

a. Pre- Activity

1.

The procedure begins with the teacher motivates the students by asking them

about anecdote text e.g. “

Do you know about narrative text?

”, “

What do you

know about narrative text?

”, “

Have you ever read narrative text?

”. It

functions to activate their background knowledge of anecdote text.

2.

Before the teacher asks students to apply self-questioning strategy to a

passage, the teacher explains to the students the purpose of learning this

strategy. It is intended to introduce the students to self-questioning strategy

applied in the treatment.

3.

The teacher describes the strategy and makes a list of steps on the board, the

teacher gives the model of how the strategy is used in the text, and

meanwhile the students see and sometimes participate in following the steps.

The steps can be described as follows:

a)

The students must understand question “

what do you study this passage

for

?” with self

-reminder that he or she reads the passage in order to answer

questions about its content.

b)

The students locate all specific information in the passage underlines or

(42)

20

c)

For each specific information that the students have highlighted, he or she

generates a question. The students read through the passage again to

answer each question that she or he has generated by using

self-questioning strategy. Corder (1979: 26) mentions that the students are

taught to ask WHO? WHAT? WHERE? WHEN? WHY? HOW? For

example, “

Who is the main character in the story

?” “

What did the

character do in the story

?” Students answer the questions by paraphrasing

sentences in the first paragraph. They are taught to get the answer to these

questions in the opening paragraph, it is usually easy enough to see how

the questions are answered.

d)

The students underline events and actions they found in the text. This

helps them to make questions about specific information stated in the text.

e)

Students review the specific information, the questions and answers.

b. While- Activity

1.

Teacher breaks the students into groups consisting of five to six students

2.

Teacher distributes the text to all students and instructs them to write 5

questions based on the text.

3.

The teacher asks the students to go through the text in order to get an

overview of the whole text.

4.

Teacher teaches the students about how to make common questions that

usually found in the text by giving the example how to arrange a question.

5.

Next, the students underline the main idea they found in the text. They make

questions, for example, “

What is the main idea of the first paragraph?

(43)

21

7.

The students underline some of the specific information they found in the text

and make questions by using WHAT or WHO i.e. “

Who is the main character

in the story?

”, “

What is the character do in the text?”

8.

The students underline events they found in the text and make questions

based on them.

9.

The students make prediction about the answers of those questions and write

the answers on their own paper.

c. Post- Activity

1.

The students exchange their questions with their partner and answer each

other, and then they discuss their answer with their partner.

2.

The teacher administers students’ questions and let the students answer.

3.

The students submit their work to the teacher.

4.

Students try to express their problems in comprehending the text.

5.

Teacher summarizes the materials.

6.

Teacher gives homework to the students.

2.8 Theoretical Assumption

Based on the previous explanation, the researcher came to the assumption that

teaching reading through Collaborative Strategic Reading is more very likely to have

an effective and relevant

impact to increase students’ reading compre

hension

achievement instead of teaching reading through Self-Questioning Strategy.

CSR could encourage students actively to be engaged in constructing meaning from

(44)

22

knowledge and experience, information found in the text and broader social context

of learning.

It was because CSR emphasizes in making the students have the skill to comprehend

the text clearly and quickly by its few steps such as Preview, Click-Clunk, Get the

gist and Wrap up. Judging from the previous explanation, the researcher will assert

that the students will have more practice and try to say the idea what they will be

acquired in the text and by repeating them it will be useful as a stepping-stone to

another new form formula.

2.9 Hypothesis

Concerning with the theories and assumptions above, the researcher formulated the

hypotheses as follows:

1.

There is a significant difference in students’ reading comprehension

achievement between those taught through Collaborative Strategic Reading and

those taught through Self-Questioning Strategy.

2.

Collaborative Strategic Reading is more effective to increase

students’ reading

(45)

23

III. RESEARCH METHODS

This part discusses the design of this research and how to collect the data from the

samples. The writer encloses the data collecting technique and the procedures of

this research. The writer also gives the scoring system and how the data will be

analyzed.

3.1 Research Design

To conduct this research, the researcher used

Control

Group Pretest Posttest

Design

. This design belonged to true experimental designs. True experimental

designs have three basic characteristics: (1) a comparison group is present, (2)

The sample are randomly selected and assigned to the groups, and (3) a pretest is

administered to capture the initial differences between the groups (Hatch and

Farhady 1982:22).

The researcher used this design because he wanted to give special treatment to the

experimental class one using collaborative strategic reading in teaching reading

comprehension. There were two classes of this experimental study; experimental

class one which get treatment through collaborative strategic reading and another

as a experimental class two which get treatment through self-questioning strategy.

(46)

24

Experimental class two was needed for comparison purposes because it lets the

writer interpret his findings more confidently. Both of them got the same

materials.

Based on Hatch and Farhady (1982: 22), the researcher used the following design:

G1 : T1 X1 T2

G2 : T1 X2 T2

Notes:

G1 = experimental Group 1

G2 = experimental Group 2

T1 = the pretest

T2 = the posttest

X1 = treatment by the researcher (Teaching through collaborative strategic reading)

X2 = treatment by the teacher (Teaching through self-questioning strategy)

3.2 Population and Sample

3.2.1 Population

The population of the research was the first year students of SMAN 8 Bandar

Lampung. The researcher chose the first year students in the second semester of

academic year 2011/2012. There were eight classes of the first year students and

(47)

25

3.2.2 Sample

Based on the population above, two classes were taken as the sample of this

research, as experimental class one and experimental class two. The two sample

classes of this research were selected using simple random sampling. Those

classes were selected randomly by using lottery, since the first year students in

SMAN 8 Bandar Lampung was not stratified class. There was no priority class. It

was applied based on consideration that every class in the population had the

same chance to be chosen and in order to avoid the subjectivity in the research.

Next, to determine which class is as the experimental class one and experimental

class two, the researcher used coin by flipping it.

3.3 Data Collecting Technique

In collecting the data, the writer used the following steps:

1.

Administering the Pre-test

The pre-test was given before the treatment, in order to find out how far the

competence of the students in reading comprehension or their input before the

treatment and to find out t

he experimental class’ reading

comprehension

achievement, the test was multiple choices that consist of 25 items. The

materials tested was related to the curriculum used in the school and suitable

with their level.

2.

Administering the Post-test

Post-test was given after the treatment in order to find out whether there was

any increase of students’ reading

comprehension achievement. The test was

(48)

26

pre-test. The materials tested, were related to the curriculum used in the

school and suitable with their level. The post-test was done after three

meetings of the treatments. The result of the post-test of the participant class

was analyzed.

3.4 Research Procedures

There are some procedures that will be applied for taking the data:

1.

Determining the population and the sample.

The researcher took two classes to determine the experimental class one and

experimental class two.

2.

Administering try-out.

The try-out test had been conducted before the pre-test was administered.

This was expected to measure the validity and reliability of pretest and

posttest, to ensure the data used by the researcher was valid and reliable to

use as a research instruments. This test was multiple choice tests and was

conducted in 80 minutes. There were 35 items of multiple choices with four

options and one of them was as the correct answer, the test items could be

reduced or kept depends on its reliability and validity. The aim of try -out

was to determine the quality of the test used as the instrument of the

research, and to determine which item should be revised for the pre-test and

the post-test. This research used the result of the try-out test to measure the

level of difficulty and discrimination power, to find out the validity and

(49)

27

Criteria of Good Test

Whenever a test or other measuring device is used as part of the data

collection process, there are four criteria of a good test should be met:

validity, reliability, reliability, level of difficulty, and discrimination power.

1.

Validity of the Instrument

A test can be said valid if the test measures the object to be measured and

suitable with the criteria (Hatch and Farhady, 1982: 250). According to

Hatch and Farhady (1982: 251), there are four basic types of validity: face

validity, content validity, construct validity and empirical or

criterion-related validity. To measure whether the test has good validity, the

researcher used content and construct validity since the other two were

considered be less needed. Face validity only concerns with the layout of

the test. Criterion-related validity concerns with measuring the success in

the future, as in replacement test (Hatch and Farhady, 1982:251). The two

types used in this research were:

a.

Content validity

Content validity refers to the extent to which a test measures a

representative sample the subject matter contents, the focus of the

content validity is adequate of the sample and simply on the

appearance of the test (Hatch and Farhady, 1982:251). To know

whether the test is good reflection of what will be taught and of the

knowledge which the teacher wants the students to know, the

researcher compares this test with table of specification. If the table

(50)

28

from that point of view. A table of specification is an instrument that

helps the test constructor plans the test.

Table 3.1 Table specification of try out

No Objectives Item Numbers Total

Items Percentage 1 Identify the main idea 1, 9, 15, 19, 26,27 6 18 % 2 Vocabulary

6, 7, 17, 18, 24, 25, 33, 35

8 22 % 3 Specific information 4, 10, 12 ,13, 14, 21, 23, 28,

30, 32 10 28 %

4 Inference 2, 3, 11, 20, 22, 29, 31 7 20 %

5 Reference 5, 8, 16, 34 4 12 %

TOTAL 35 100%

b.

Construct Validity

Construct validity is concerned with whether the test is actually in line

with the theory of what reading comprehension means. To know the

test was true reflection of the theory in reading comprehension, the

researcher examined whether the test questions actually reflected the

means of reading comprehension or not.

2.

Reliability of the Instrument

Reliability refers to the extent to which the text is consistent in its score,

and gives us an indication of how accurate the test score are (Hatch and

Farhady, 1982: 244). To test the reliability of the instruments, the writer

used

split-half

method in which the reading tests were divided into halves

(Hatch and Farhady, 1982: 246). By splitting the test into two equal parts

(first half and second half); it is made as if the whole tests have been

(51)

29

were number 1. until 18. The second half contained passage 3 and 5

involving question number 19. until 35. Moreover, by arranging the tests

into first half and second half allowed the writer to measure the test

reliability by having

split half method

.

To measure the coefficient of the reliability between the first and the

second half, Pearson Product Moment was used, which was formulated

as follows:

=

� ∑

− ∑

√� ∑

2

− ∑

2

� ∑

2

− ∑

2

Where,

n

= number of students

r

= coefficient reliability between first and second half

= total number of first half

= total number of second half

= square of

= square of

= total score of first half items

= total score of second half items

(Hatch and Farhady, 1982: 222)

Then to know the coefficient correlation of the whole items, Spearman

Brown’s Pharophecy Formula was used. The formula was as follows:

�� =

+��

��

Where:

rk

= the reliability of full test

rl

=the reliability of half test

The criteria of reliability are:

0.90- 1.00 = high

(52)

30

3.

Level of Difficulty

To see the index of difficulty, the writer used the following formula:

�� =

Where,

LD = level of difficulty

R

= the number of the students who answer correctly

N = the total number of the students

The criteria are:

< 0.30

= Difficult

0.30- 0.70 = Average

> 0.70

= Easy

(Heaton, 1975: 182)

4.

Discrimination Power

The discrimination power (DP) was the proportion of the high group

students getting the items correct minus the proportion of the low-level

students who getting the items correct. In calculating the discrimination

power of each item, the following formula was used:

�� =

� ������ �� − � ������ ��

⁄ �

Where,

DP

= Discrimination Power

U

= Number of upper group who answer correctly

L

= Number of lower group who answer correctly

N

= Total number of the students.

The criteria are:

DP: 0.00-0.19

= Poor

DP: 0.20-0.39

= Satisfactory

DP: 0.40-0.69

= Good

DP: 0.70-1.00

= Excellent

(53)

31

5.

Administering the pretest

The test aim wa

s to know the input or the state of students’ ability in

reading

comprehension before they were given the treatment. The test was used by

the researcher was multiple choice questions with four alternative answers for

each question. One was the key answer and the last three were distracters.

6.

Giving the treatment

There were three times treatments in this research. The narrative text was

used as the media in teaching reading to the students by using collaborative

strategic reading in experimental class one and self-questioning strategy in

experimental class two.

7.

Administering the post test

The next step were administered the post test to the both classes. The type of

the test was similar to the pretest. The urgency of giving the test was to find

out whether there was any

increase of the students’

reading comprehension

achievement.

8.

Analyzing the result of both pretest and post test

The next step of the research analyzed the data. Drawing conclusion from the

tabulated results of the pre-test and post-test administered.

3.5 Scoring System

In scoring the result of stu

dents’ test, the researcher

used Percentage Correct

(Lyman, 1971:95). The percentage correct score was used in reporting the result

(54)

32

The researcher will calculate the average of the pre-test and post test by using this

formula:

T R X%c 100

(Lyman, 1971: 95)

Where:

X%c = percentage of correct score

R = number of right answers T = total number of items on test

3.7 Data Analysis

Referensi

Dokumen terkait

Berdasarkan hasil analisis maka diperoleh korelasi antara etos kerja dengan komitmen organisasi (r) sebesar 0,562 dengan p= 0,000 dimana p &lt; 0,01, hal ini berarti ada

Hasil penelitian ini mendukung penelitian yang dilakukan Putri dan Asyik (2015) yang mengemukakan bahwa status opini atas laporan keuangan yang telah diaudit

Manfaat Penelitian: Dapat mengetahui pengaruh latihan aerobik dan body mass index (BMI) terhadap peningkatan VO2 maksimal pada siswa SMP Negeri 2 Gatak.. Metode

Hasil dari penelitian menunjukkan bahwa patut diduga bahwa merek CELINE milik Tergugat didaftarkan dengan dan dilandasi oleh itikad tidak baik, yaitu dengan maksud meniru dan

[r]

Sukses atau tidakn ya suatu pekerjaan diten tukan oleh sejauh m an a sem an gat seseoran g dalam berusaha3. Selain itu kita juga diperin tahkan un tuk berserah diri kepada

Berdasarkan uraian di atas, PT Radio Idola Nada Indah telah mendapatkan Izin Mendirikan Bangunan yang pemenuhan legalitasnya dapat dibuktikan dengan terpenuhinya

Hasil penelitian yang dilakukan untuk mengetahui hasil belajar siswa sebelum kedua sampel diterapkan perlakuan yang berbeda, yaitu kelas eksperimen diberi perlakuan