Abstrak
ABSTRACT ELVIRA WAHYUNI BP.2313.081, “The Effect of Using Word Wall Strategy to Improve Students’ Vocabulary Mastery at the Eighth Grade Students of SMPN 2 Dharamasraya’’. A Thesis, State Islamic Institute (IAIN) Bukittinggi, 2018. This research was due to several problems found in the field that is the students were lack of vocabulary, most of students were uninterested to learn English vocabulary and they were not motivated to learn English vocabulary and teacher still used conventional strategy in teaching vocabulary. In teaching vocabulary, there are strategies that give effect to the students’ vocabulary mastery. One of the strategies is Word Wall Strategy. This research aims to improve students’ vocabulary mastery by using Word Wall Strategy. This research was an experimental research by using quantitative approach. The total population are 51 students from class VIII A and class VIII C. Class VIII C was used as experimental class in which the treatment was given, while class VIII A was used as control class where the researcher only used the conventional strategy in teaching vocabulary. The researcher used purposive sampling technique in chossing the sample. To analyzing the data, the researcher used Liliefors test to test the normality an F-test to test homogeneity. Then, to test the hypothesis the researcher used t-test (∝) = 0.05. From the result and accounting the pre-test and post-test scores of the experimental class, it was found that the t-obtained (4.810) was higher than the t-table (1.960) with the degree of freedom (df) = 49 and level of significance (∝)= 0.05/2= 0.025. The alternative hypothesis (Ha) was accepted which means that there was significant effect of Word Wall Strategy on students’ vocabulary mastery. Then, the calculation of post-test both classes: experimental and control classes was obtained the t-obtained (5.102) which was higher than the t-table (1.645) with the degree of freedom (df) = 49 and level of significance (∝)= 0.05/2= 0.025. The alternative hypothesis (Ha) was accepted which means that there is significant difference between using Word Wall Strategy and using conventional strategy. Then, the t-obtained in post-test both classes was obtained t-obtained (5.102) which was higher than t-table (1.645) with degree of freedom (df) = 49 and level of significance (∝) = 0.05. The alternative hypothesis (Ha) was accepted which means that the students who are taught by using Word Wall Strategy is better than the students who are not taught by using Word Wall Strategy. So, it can be concluded that the entire hypothesis are accepted. There for, it is proved that using Word Wall Strategy can help the student at eight grade of SMPN 2 Dharmasraya in improving their vocabulary mastery. Keywords : Vocabulary Mastery, Word Wall Strategy