47
From the computation, the percentage of the pre test score between experimental group and controlled group were similar. If the result of the
formative tests and post-test were better, it showed that the methods can improve the students’ vocabulary mastery.
4.2.2 Formative Tests
4.2.2.1 First Formative Test
The first formative test was followed by 40 students of X-4 SMA Negeri 6 Semarang as the experimental group and 39 students of X-2 SMA Negeri 6
Semarang as the controlled group. Then, the writer summarized all of the scores, and from this test the total score of experimental group was 3104. The
computation is shown below: The percentage of the score = The total score
. x 100
The number of the students = 3104 x 100
40
= 77.6 And for the controlled group, the total score of this first formative test
was 3110. The computation is stated as follows: The percentage of the score = The total score
. x 100
The number of the students = 3110 x 100
39
= 79.7 Based on the computation, the writer found that the percentage of the
first formative test was 77.6 for the experimental group and 79.7 for the
48
controlled group. It showed that the students could absorb the material lesson and the method could improve their vocabulary mastery, because the result was better
than the pre-test result although in this first formative test the controlled group got the better result than experimental group.
4.2.2.2 Second Formative Test
The second formative test was followed by 40 students of X-4 SMA Negeri 6 Semarang as the experimental group and 39 students of X-2 SMA Negeri
6 Semarang as the controlled group. Then, the writer summarized all of the scores, and from this test the total score of experimental group was 1037. The
computation is shown below: The percentage of the score = The total score
. x 100
The number of the students = 3247 x 100
40
= 81.2 And for the controlled group, the total score of this first formative test
was 3110. The computation is stated as follows: The percentage of the score = The total score
. x 100
The number of the students = 3082 x 100
39
= 79.03 Based on the computation, the writer found that the percentage of the
second formative test was 81.2 for the experimental group and 79.03 for the controlled group. It means that the students of experimental group that used direct
49
method could improve vocabulary mastery better than controlled group that used conventional method.
4.2.3 Post Test
