Place and Time of the Study Population and Sample of the Study

their friends about content of the song. After the students understand and know meaning of the word that was given. The writer asked the students to make a story using vocabulary that was learned. 5 Fifth meeting, the writer reviewed vocabularies that have been given. At the end of meeting, the wrier conducted a test called post test. The post test was designed to know how far students’ mastery in vocabulary that have been given and to know whether the use of Song as media in mastery vocabulary is effective or not. 2. Teaching Vocabulary without Songs Besides teaching vocabulary using songs, the writer also taught vocabulary without songs in control class. The teaching of vocabulary without songs was done by the writer in five meetings. Below are the brief explanations about the teaching and learning process in control class: 1 First meeting, the writer explained what she is going to do and emphasize on that students that they are going to mastery vocabulary by using song for the next three meetings. Then, the writer gave the pre-test to students in order to know the students’ competence in understanding the vocabulary based on the pre-test’s result. 2 In second to forth meeting the writer introduced the songs and gave students hand-outs song lyrics but the songs read as read a book without with rhymes. The writer wrote the difficult words on the white board and asked students to translate into Indonesian language. The writer asked them to memorize the words. 3 In Fifth meeting, the writer reviewed vocabularies that have been given. At the end of meeting, the wrier conducted a test called post test. The post test was designed to know how far students’ mastery in vocabulary that have been given. 4 Technique of Data Collecting the writer used the test to collect the data. The pre-test and post-test waas given in both of the two classes. The pre-test was given before the writer began the teaching and learning process in two classes. Meanwhile, the post- test was given in order to know the students’ improvement in mastery vocabulary. The pre-test and post-test are multiple choice form and it was consists of 20 items. The teacher gave 30 minutes in both of the two classes for finishing pre-test and post-test. 5 Technique of Data Analysis The writer has conducted the test; pre-test and post-test. The data is compared from the mean of the score from pre-test and post-test. After getting the data from the score, then the data was analyzed and processed by using statistic calculation of T-test formula with significance degree 5 and gained scores. T-test in this research used to test the average difference count, was there a significant difference or not between the experimental group and the control group. While the gained score is the difference between pre-test and post-test score of each class of the experimental and the control groups. Gain scores are used to determine the increase or decrease in scores and to determine the effectiveness of the media used. However, prior to the tests the hypothesis necessary analysis prerequisite tests first, namely the distribution normality test and homogeneity test. 1. Pre requisites Test Analysis a Normality Test Population