The school has 73 teachers; all classes are handled by them in that school. The research were done for 5 weeks, there are 2 session every week
for each group experiment group and control group. It began on April 5, 2010 and it ended on May 21, 2010.
C. Population and Sample
The population of this research is students of eighth grade, they are 370 students. They were divided into nine classes, class 8.1 to class 8.9. The
writer thought that it is too large to do research to all of the students. Therefore, the writer use cluster sampling for the samples because it is more
effective to use in a large numbers of classes. According to Jack R. Fraenkel and Norman E. Wallen, “the selection of groups, or clusters, of subjects rather
than individuals is known as cluster sampling. Just as simple random sampling is more effective with large numbers of individuals, cluster sampling is more
effective with larger numbers of clusters”.
1
Based on the cluster sampling that is used by the writer in taking the sample, she took two classes randomly; there are class 8.5 as the control
group and class 8.6 as the experiment group. There are 42 students of each class. Unfortunately, two students of the experiment group were taken out
from the sample because they attended the class only three times. Therefore, the writer made it equal to help her in analyzing the data later. Those are 40
students in the experiment group and 40 students in the control group. So, there are 80 students as the sample.
D. Method of the Research
In this research, the writer uses a quasi-experimental research. It is to involve the students in groups that is the experiment group and the control
1
Jack R. Fraenkel and Norman E. Wallen, How to Design and Evaluate Research in Education,5
th
ed, New York:Mc Graw Hill, 2008, p. 100
group. Suharsimi Arikunto stated that: Generally, the researcher in experimental research used two groups, experiment group as a group that got
the treatment and the control group that did not get the treatment.
2
According to William Wiersma and Stephen G. Jurs: A quasi-experimental research is an approximation of a true
experiment that uses groups that have not been formed randomly. Such research can make valuable contribution, but its is important
that the researcher be especially cautious about interpreting and generalizing results.
3
Based on the explanation above, it tells that a quasi-experimental research specifically in the research is impossible to control the entire variable
in the research except some of it. However, if the researcher could take the right interpretation, the result could give the contribution in the research.
E. Technique of Collecting Data
The instrument that the writer used for collecting data was reading test. The test divided into two tests, pre-test and post-test. The pre-test was
given to the students before the treatment. The post-test was used when the treatment had been done, and it was given to find out the influence of group
work technique as well as the writer used in the experiment group in teaching reading.
There are 20 items of multiple choices questions in each of the test. The score per item is 5 for correct answer. Students will get 100 point if they
can answer correctly to all of the questions. Both of the classes, experiment group and control group were
given the same test.
2
Suharsimi Arikunto, Prosedur Penelitian Suatu Pendekatan Praktik, Jakarta:PT Rineka Cipta, 2006, p. 311
3
William Wireman and Stephen G. Jurs, Research Methods in Education 9
th
ed, Longman:Pearson, p. 165
F. Technique of Data Analysis
