_ X = 58.47
Based on the calculation above, the mean of the student s’ score in post-test
1 was 58.4 7. the improvements of the students’ score from pre-test to post-test 1
derived 21.11. and the percentage from pre-test to postt-test 1 is 56.45. to know that improvement into percentage, the writer calculated is as follows:
y1 - y P =
─── X 100 y
58.47 – 37.36
P = ───────── X 100
37.36 21.11
P = ──── X 100
37.36 P = 56.50
The percentage of students who pass the Minimum Mastery Criterion KKM through the formula:
F P = ── X 100
N 12
P = ── X 100 36
P = 33.33
So based on the calculation, the writer knows that the mean of the students at firrst cycle is 58.4
7. Moreover, the improvement of students’ score of vocabulary fromre-test to first post-testis 56.50. Since there are twenty students
who get 60 score and above, it shows that 33.33 students can pass the Minimun Mastery Criterion KKM.
At the second cycle of CAR, the writer calculates the mean of students’ score in vocabulary post-test 2 gained 71.11 as followed:
_ ∑x
X = ── N
_ 2560
X = ───
36 _
X = 71.11
Next, to know the percentage of students who pass the Minimum Mastery Criterion KKM, it could be calculated as following:
F P = ── X 100
N 31
P = ── X 100 36
3100 P = ──
36 P = 71.11
After that, to know the students’ improvement from pre-test to post-test 2 in percentage, the writer made a percentage calculation as following:
y2 - y P =
─── X 100 y
71.11 – 37.36
P = ───────── X 100
37.36
33.75 P =
──── X 100 37.36
P = 90.33
From the calculation, the writer found that the mean of the students’ score in post-test 2 is 71.11. There are thirty one students who get sixty 60 score and
above, the percetage of the students who pass the Minimum Matery Criterion KKM is 86. It improved from the pre-test which gained only 8.33 and in the
post-test 1 which had any improvement become 33.33. Therefore, based on the stud
ents’ percentage score from pre-test to the post-test 2 in the second cycle is improved about 77.78 86.11-8.33. It proved that the target of classroom action
reseacrh CAR is success in which minimum 75 students passed the Minimum Mastery Criterion KKM could be improved.
C. The Interpretation of Data
The Interpretation of the data is among pre-testt, post-test 1 and post-test 2 result. The pre-test is done before the action, the post-test 1 is done in cycle 1, and
the post-test 2 is done in cycle 2. The result of pre-test shows that the avarage score of students is 37.36.
Futhermore, there are only three students who can pass the Minimun Mastery Criterion KKM with the percentage 8.33 from the total number of the
students. The highest score is 60 and the lowest score is 25. The result of post-test 1 in cycle 1 shows the mean of the students is 58.47.
There are twelve students who get 60 score and above. The percentage of the students who pass the Minimum Mastery Criterion KKM is 33.33 with the
highest score 80 and the lowest score is 35. Since the improve of the students’
score of teaching vocabulary from pre-test to post-test is 25 33.33-8.33. Therefore the writer and the teacher still need to increase it by moving to cycle 2.
Next, the result of post-test 2 shows that the mean of students in cycle 2 is 71.11 with the highest score is 85 and the lowest score is 45. The percentage of
the students who pass the Minimum Mastery Criterion KKM is 86.11 with the improve
of the students’ score in teaching vocabulary from pre-test to post-test 2
is 77.78. Since more than 70 from the total number of students pass the Minimum Mastery Criterion KKM sixty score 60. Therefore it has reached the
success and the intervention is stopped.
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CHAPTER V CONCLUSION AND SUGGESTION
After finishing the whole steps of this CAR study, the writer makes some conclusion consediring the result of the reseacrh. Futhermore, related to the
conclusion the writer also given some suggestion.
A. Conclusion
Based on the research conducted in seventh grade of SMPN 1 Pontang Serang-Banten in academic year 2010-2011. This research is aimed to improved
the students’ understanding in learning vocabulary that had been the problem. It is known based on the interview and observation done by the writer.
Related to the test result, there was 27.14 improvements of students’ mean score from pre-test to the post-test of the second cycle. In the pre-test, there were
only three students who passed the KKM. Then in the result of the post-test in cycle 1, there were 12 or 33.33 students in the class who passed in KKM
considering their mean score of the test gained 58.47. The last result of post-test in the cycle 2, there gained 31 or 86.11 students who passed the KKM in which
their mean score of vocabulary test devided 71.11. Next, based on the observation result it can be showed that the students
were more active and interested in learning vocabulary by using pictures in the classroom. Indeed they could analyze the charactheristic of the pictures.
B. Suggestion
From the conclusion above, there are some suggestions that can be given: 1.
The teacher should ask the students to improve their vocabulary and the teacher should teach effectively and also clearly about vocabulary by using
pictures. 2.
The teacher improves himherself in mastering the material and using pictures technique to overcome the students’ problem in learning
vocabulary, the teacher should be explaining first and than give an example about the characteristics of the pictures, so afetr that they can give an
exercise to the students.
