THE EFFECT OF USING SCHOOL BULLETIN BOARD TOWARD STUDENTS' VOCABULARY MASTERY AT THE EIGHT GRADE OF SMPN 03 PAYAKUMBUH ACADEMIC YEAR 2016/2017
This research was due to several problems found in the field that is; the students still lacked of vocabulary which made them difficult to determine the meaning or words in contex. Therefore, the students’ vocabulary test scores did not achieve the passing grade. While, in teaching vocabulary, there are media that give effect to the students’ vocabulary mastery. One of the media is School Bulletin Board. This research used quasi experimental research by using quantitative approach. The sample was 62 students from class VIII.2 and class VIII.3. Class VIII.2 was used as experimental class in which the treatment was given, while class VIII.3 was used as control class where the researcher did not use the School Bulletin Board only in teaching vocabulary. The researcher used Cluster Sampling Technique in choosing the sample. To analyze the data, the researcher used Liliefors test to test the normality and Bartlett-test to test the homogeneity. Then, to test the hypothesis the researcher used t-test and (α) = 0.05. Based on the calculation of pre-test and post-test from experimental class, it was found that the t-obtained (2.70) was higher than the t-table (2.00) with degree of freedom (df) = 28 + 28 - 2 = 54 and (α) = 0.05. Hence, the alternative hypothesis (Ha) was accepted which means that there was significant effect of using School Bulletin Board to students vocabulary mastery. Then, the calculation of post-test of both classes is as follows, it was obtained that the t-obtained was (2.30) which was higher than the t-table (2.00) with degree of freedom 28 + 34 – 2 = 60 and (α) = 0.05. The alternative hypothesis (Ha) was accepted which means that there is significant difference between using School Bulletin Board and not using School Bulletin Board. Then t-obtained both of classes is (2.30) which was higher than t-table (1.670) with (α) = 0.05. The alternative hypothesis (Ha) was accepted which means that using School Bulletin Board is better than not using School Bulletin Board in teaching vocabulary. It can be concluded that the entire hypotheses are accepted. It is proved that using School Bulletin Board could help the students at the eighth grade of SMP N 03 Payakumbuh in improving their vocabulary mastery.