curriculum the students get the same material in an academic year, the students are in the same level of competence in the same grade, the averages of English
lesson competence are the same, and the number of students is equal. In conclusion, in I chose XI IPS 2 and XI IPS 4, where XI IPS 2 as the control group
and XI IPS 4 as the experimental group. The both groups have equal number of students that is 35 students for each group. I choose the two classes because I
think the two classes fulfill the requirement of the technique or steps in taking the sample that has been explained in the previous explanation.
3.4 Research Variables
Most research conducted in order to explore the strength relationship between variables. Nunan 1993:25 states that a variable is anything doesn‟t
remain constant. True experimental research involves two groups; an experimental and control group in which the experiment group typically receives
new treatment, while the control group is treated as usual or conventional method. There are two main variables, independent variable X and dependent variable
Y. The independent variable Nunan 1993: 25 states that independent variable is variable that experimenter expects to influence the other, whereas Nunan 1993:
25 states that dependent variable is a variable upon which the independent variable is acting. Thus, the independent variable X affects the dependent
variable Y. In this study, the independent variable X is the use of Course Review Horay
technique in teaching simple past tense and the independent variable Y
students‟ achievement manifest in the test score. X Y
3.5 Type of Data
The data used in this research is quantitative data because it needs the data calculation of the students result in form of statistical formula.
3.6 Instrument for Collecting the Data
According to Arikunto 2002:136, research instrument is a device used by the researcher while collecting the data to make his work become easier and to get
better result, complete and systematic in order to make the data easy to process. In this research, I use a test method as the instrument. Test is a set of questions or
device used to measure the skill, intelligence, ability, and talent of an individual or group. There are two kinds of testing grammar; receptive or productive test. In
this research, I will use receptive test in form of multiple-choice test. The test is emphasized on regular and irregular verbs.
Multiple-choice test is chosen because of some advantages. They are: 1 The technique of scoring is easy.
2 It was easy to compute and determine the reliability of the test 3 It was economical because the number of items can be answered in a short
period of testing time. 4 It was more practical for the students to answer. They just marked the most
appropriate answer in the answer sheet. To collect the data that are needed in this research, I use rating scale from
the pre test and post test. Some of the data are gained from the pre test and post test that will be conducted at the beginning and the end of the experiment.
3.7 Procedure of the experiment
