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a.     Test
In  the  test,  the  researcher  prepared  40  diphthongs  words.  The  participants should mention  the words  based on their understanding.  The participants  would
record their pronunciation. The first step to get the data was listening the recorder from the participants.
Then,  the  researcher  would  calculate  the  recorders  based  on  their  pronunciation. The researcher would make percentage from the data between students who could
pronounce  diphthongs  correctly  and  for  those  who  could  not  pronounce diphthongs correctly.
In order to find out the result in number, the research was going to calculate the total respondents. Then, the researcher changed it into percentage and put it in
a table. The formula was; Ʃ�
Ʃ    � = ����������
Notes: Ʃp  was  the  number  of  participants  based  on  pronounce  diphthongs
correctly or not Ʃx was the number of all participants in this research
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b.     Questionnaire
The researcher also used questionnaire. It was close-ended questions. In the questionnaire,  the  researcher  made  six  close-ended  statements.  For  each
statement,  the  degree  of  agreement  and  disagreement  were  classified  as  strongly agree, agree, undecided, disagree, and strongly disagree.
The first step to gain the data was the researcher calculated the amounts of the  responses  from  the  students  who  answered  strongly  agree,  agree,  undecided,
disagree, and strongly disagree. After knowing the total number, the writer put the data on the table to make it clear.
The  result  was  based on  the  participants’  answers.  In  order  to  know  the
result  in  number,  the  researcher  calculated  the  total  respondents  and  the  data obtained, and changed it into percentage. The formula was;
Ʃ Ʃ�   �
= ����������
Notes Ʃ  was the number of participants based on the degree of agreement
Ʃ� was the number of participants in this study
Percentage was the result. PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
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c.     Interview
In  order  to  answer  the  research  problems,  the  researcher  analyzed  and presented the data from the interview. The interview was conducted to get data for
the research problems, which were the pre- service English teachers’ difficulties in
learning  diphthongs  pronunciation.  After  the  researcher  had  conducted  the interview,  the  researcher  had  to  summarize  the  data.  Based  on  the  data,  the
researcher  would  tell  the  difficulties  from  the  participants  as  the  result  for  the second  research  problem.    The  researcher  would  describe  and  explain  the  result
into descriptions.
E. Research Procedure
In  this  research,  the  researcher  conducted  the  following  research  steps  to make the research  effective. There were six steps that should be followed which
were; planning, defining the participants, constructing the instruments, conducting the survey, processing the data, and reporting the data.
1. Planning
The  first  step  that  should  be  followed  by  the  researcher  was  planning  the research. The researcher started this research from the topic that would be used for
this research. The researcher also explained the reasons why the researcher chose the topic and the background of the topic chosen. The  researcher formulated the
28 research  problems  for  the  research.  Last,  the  researcher  gathered  all  theories  to
support the researcher in conducting the research.
2. Defining the Participants
The  next  step  that  the  researcher  had  to  conduct  was  to  define  the participants of the research. The target population of this research was pre-service
English  teachers  of  ELESP  in  Sanata  Dharma  University  who  had  taken microteaching  class.  The  writer  chose  40  students  as  the  participants  for  this
research.
3. Constructing the Instruments
In  this  step,  the  researcher  already  had  the  sampling.  Therefore,  the researcher needed to make an instrument to conduct the research. The researcher
constructed  a  test.  In  the  test,  the  researcher  prepared  40  English  diphthongs words. The researcher also used interview as the instrument. In the interview, the
researcher had to record the interview to gain the data. The researcher would take five students with good pronunciation and five
students with bad pronunciation. The interview was going to be done in five days, with three students each day and would take 15 minutes for each student the most.
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4. Conducting the Survey
The researcher distributed the test  to  the participants  of the research. After the  test,  the  researcher  conducted  interviews  with  some  of  the  participants  who
had either good or bad pronunciation. As a result, the researcher chose 10 students to be interviewed. Five of those were good in pronouncing diphthong sounds and
the others were not.
5. Processing the Data
After conducting the research, the researcher should gather the data from the test  and  the  interview.  Then,  the  researcher  analyzed  the  data  to  be  processed.
This step was done to find out the results of the research.
6. Reporting the Data
The  last  step  of  the  research  was  to  report  the  data.  The  result  of  this research was used to explain the research result and also the discussion. In the end
the  result  would  be  used  to  support  the  conclusions  of  the  research. PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI