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CHAPTER III RESEARCH METHODOLOGY
This chapter presents the description of the research method used in the study. It consist the research design, place and time of the research, population
and sample, instrumentation, technique of collecting the data and technique of data analysis
A. Research Design
Research method in education and the other social science are often divided into two main types : quantitative and qualitative methods. In this study,
the writer used the quantitative methods which can be defined as: “Explaining phenomena by collecting numerical data that are analyzed using mathematically
based methods in particular statistics
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. In quantitative research, there are two main types of design, experimental design and non-experimental design.
The research design of this study is that it has three characteristics 1.
An independent variable is manipulated manipulation 2.
All other variables that might affect the dependent variable are held constant control,
3. And the effect of manipulation of the independent variable on the
dependent variable is observed Prior to the teaching instruction, the experimental and control groups were
administered pre-test. During the session, both groups were given equal vocabulary materials and received a slightly different teaching instruction.
In the experimental group, the students were taught vocabulary by contextual method while those in the controlled group were taught vocabulary by
non contextual. At the end of the session, the two groups were administered a post test as a
final evaluation of their vocabulary achievement.
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Daniel Muijs, Doing Quantitative Research in Education, Great Britain: Athenaeum Press Ltd, 2004 p.1
iv B.
Place and time of research
This research was carried out at Senior High School of PGRI 56 Ciputat, which located on Jl Pendidikan, Ciputat. It began by observation to the school on
April 2009. And the research took place on May 2009. C.
Population and Sample
The population of the research is 90 students, from the level of first grade students of SMU PGRI 56 Ciputat. There were 30 students in total which were all
included in the research and split up equal at random sampling into the experimental and controlled group; there are 15 students in each group.
D.
Instrumentation
The writer gave pre-test before the teaching process and gave post-test after The teaching process was done in five meetings for both classes. The writer
compared the achievement of pre-test to identify the effectiveness of using Contextual Teaching and Learning in teaching vocabulary.
To know the effect of the two methods applied, the test was used. It was made up of : ten multiple choice, ten matching, and ten fill the blank.
E.
Technique of Data Collecting
In this research, the writer used the quantitative research approach , so the technique used to get the data which related to the teaching vocabulary by the
writer is doing some;
a. Observation
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