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CHAPTER III METHOD OF INVESTIGATION
This chapter presents population and sample, research design, method of collecting data, the instruments of the study, scoring technique and procedure of
the study.
3.1 Research Design
I used an action research in my research. “
Action research is a means of improving student achievement through more effective teaching and
administration of schools Cohen Manion, 1980; Elliot, 1991; Kemmis, 1981; Stenhouse, 1975. The action research figures is from Kemmis McTaggart
1988: 125.
Figure 3.1 The Action Research Spiral
3.2 Population and Sample
Population is a group of people or items from which the data are collected Arikunto, 1998:115. Fraenkel and Wallen 1993: 79 state that a population is
the group to which the results of the study are intended to apply. Kountour in Azib 2008: 6 stated that, “population is the large group about which the generalization
is made.” The population of this study is the eleventh year of SMA N 12 Semarang in the academic year 20102011.
Sample is a part of population and a good sample is the one that represents population from which it is selected Arikunto, 1998: 117. Kontour in Azib
2007: 7 stated that “sample is a part of population; it must be representative of all population.” SMA N 12 Semarang has seven classes include three of science
program, three of social program and one of language program. I used language program as a sample of my research appropriate to standard competence.
3.3 Method of Collecting Data
In the collecting of data, I used test technique and non-test technique. A test, in simple term, is a method of measuring a person’s ability, knowledge or
performance in a given domain Brown, 2004: 3. Non-test technique includes interview, observation, questionnaire and video recording.
In my research, the test consists of the pre-test, the speaking test 1 and the post-test. Those tests are used to measure the achievement of the students’ show
presenting skill before and after the teaching and learning process used the jigsaw method. The pre-test was held on January 31
th
, 2011, the speaking test was
February 8
th
, 2011 and the post test was after teaching and learning process by using jigsaw method on February 14
th
, 2011.
3.4 Instrument of the Study