THE APPLICATION OF CONCEPT SENTENCE METHOD TO IMPROVE STUDENTS’ WRITING SKILL OF DESCRIPTIVE TEXT: A CASE ON THE SEVENTH GRADE OF SMP NEGERI 18 PURWOREJO IN THE ACADEMIC YEAR OF 2022/2023

Abstract

The purpose of this study is to determine whether there is an effectiveness or not in applying the Concept Sentence method to improve students' writing of descriptive text. This study uses quantitative research with a quasi-experimental design. The data were collected from March 27, 2023 to May 22, 2023. The population of this study was class VII students of SMP Negeri 18 Purworejo for the 2022/2023 academic year, with a total of 223 students. The sample of this research is VII A and VII B, totaling 64 students. The research findings show that the application of the Concept Sentence method is effective in improving students' ability to write descriptive texts. This is proved by the mean post-test score of the experimental class which is 79.84. Meanwhile, the mean post-test control class was 61.16. The mean of students in the experimental class is higher than the control class. The result of the increase is also evidenced by the value of the t-test. The researcher found that the t-value was higher than the t-table (6.439 > 2.000) and the p-value was much smaller than the significance level α (0.000 <0.05), so the result of hypothesis testing, namely the alternative hypothesis (Ha) was accepted