The following is the formula to calculate the difficulty item:
14
P = T
R P = Index of difficulty.
R = Total number of students who selected the correct answer. T = Total number of students including upper and lower group.
The following is the criterion of index difficulty:
15
ID Remark
0 – 0.30 High
0.30 – 0.79 Medium
0.80 – 1.00 Low
K. The Criterion of the Action Success
In the research, the writer needs to determine the criterion of the action success. The action can be called successful, if the action is able to surpass the
criteria that had been determined and fall if it is not able to surpass the criteria that had been determined.
16
Based on the statement above, the writer and the teacher discussed to determine the criteria of the action success. From the agreement
between teacher and the writer, the writer and the teacher agreed that this Classroom Action Research can be called success when there is 70 of students
could achieve the target score of minimal mastery level criterion-Kriteria Ketuntasan Minimal KKM 60 sixty of the imperative sentence test started
from the pre-test until the second post-test in cycle two.
17
If that condition has been reached, the writer did not necessarily have to carry out the next cycle.
14
Norman E. Gronlund, Construction Achievement Test, New York: Prentice Hall, 1982, p. 102.
15
Suharsimi Arikunto, Dasar-Dasar Evaluasi Pendidikan, Jakarta: Bumi Aksara,
2007, p. 210.
16
Sukidin, Manajemen Penelitian Tindakan Kelas, Jakarta: Insan Cendikia, 2007, p. 140.
17
Sarwiji Suwandi, Penelitian Tindakan Kelas PTK dan Penulisan Karya Ilmiah, Surakarta: Yuma Pustaka, 2010, p. 61
CHAPTER IV RESEARCH FINDINGS
This chapter presents the result of the research. In this case, it discusses the result of the research in improving students’ understanding of imperative sentence
by using Total Physical Response at VII-D class of SMPN 1 Cimarga academic year 20102011. This chapter concerns with the description of the data before the
implementation the Classroom Action Research, during the implementation of Classroom Action Research, and after implementing the Classroom Action
Research and the interpretation of the data.
A. The Description of the Data 1. Findings before Implementing the Classroom Action Research CAR
a. The Result of Pre Interview
The pre interview in this study was the unstructured interview. Unstructured interview is an informal interview. The
questions that were used in unstructured interview were about opinion, attitude, or other questions that could be asked freely by interviewer to
the interviewee without using alternative answer. Pre interview was held on Wednesday, May 12
th
2010 started at 10.00 A.M and finished at 11.00 A.M. The writer asked some questions to the teacher about
teaching learning process before the action of Classroom Action Research. The question was divided into three categories. Those were
general situation in English class particularly on students’ understanding on the imperative sentence, the difficulties faced by
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