THE EFFECT OF WORD WALL ON STUDENTS’ VOCABULARY ACHIEVEMENT IN READING DESCRIPTIVE TEXT AT SEVENTH GRADE STUDENTS OF SMP NEGERI 3 PANGARIBUAN

This study deals with the effect of Word Wall on Students’ Vocabulary Achievement in Reading Descriptive Text. The population of this research was students of grade VII SMP Negeri 3 Pangaribuan, which are consisted 105 students. There were 61 students from the population taken as the sample in this research. The sample was divided into randomized groups: experimental and control group. The experimental group was taught by using Word Wall, while the control group was taught by using dictionary. To obtain the reliability of the test, the researcher applied Kuder Richardson 21 formula (KR21). The result of the reliability was 0.98. The data were analyzed by using t-test formula. The analysis showed that the scores of the students in the experimental group were significantly higher than the scores of the students in the control group at the level of significance 0.05, with the degree of freedom (df) 59, t-observed value 6.13> t-table value 2.00. The finding indicated that using Word Wall significantly affected on students’ vocabulary achievement on reading descriptive text. Therefore alternative hypothesis (Ha) was accepted.