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SKRIPSI THE EFFECTIVENESS OF ADVANCE ORGANIZER STRATEGY ON VOCABULARY TO IMPROVE EIGHTH GRADERS’ NARRATIVE TEXT READING SKILLS
In learning English, four essential language skills should be mastered: listening, speaking, reading, and writing. Among those skills, mastering reading is often considered challenging, as it requires students to comprehend and interpret the meaning of texts. In addition, it is not easy for junior high school students to understand due to several factors, including limited vocabulary, low motivation to learn, and the learning strategies used in class. This study aims to determine the effectiveness of the Advance Organizer strategy on vocabulary in improving eighth-graders’ narrative text reading skills and to examine whether there is a significant difference in achievement between students taught with the Advance Organizer strategy on vocabulary and those taught with the Memorization strategy at SMP Negeri 10 Magelang. The research employed a quasi-experimental design with a pre-test and posttest for the experimental and control groups. The sample consisted of 64 students, divided into an experimental group and a control group. The experimental group was taught with the Advance Organizer strategy on vocabulary, while the control group received instruction through the Memorization strategy. The data were collected through reading tests (pre-test and post-test) and analyzed with normality tests, homogeneity tests, N-gain test, and Mann-Whitney U test. The results indicated that the Advance Organizer strategy on vocabulary was effective in enhancing students' narrative reading skills, with an N-Gain value of 68.3% (moderately effective category). The average post-test score of the experimental group reached 77.34, surpassing the control group's score of 48.16. There was a significant difference between the two groups, as confirmed by the Mann-Whitney U test, which generated a significance level of 0.01 (p < 0.05). The difference was in favor of the experimental group, indicating that students taught with the Advance Organizer strategy performed significantly better than those taught with the Memorization strategy, whose N-Gain was only 41.6%, classified as ineffective.
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