The effect of using authentic materials to vocabulary mastery at The Eighth Grade Students of SMPN 5 Padangsidimpuan

Br Sinaga, Ragil Sukma Dewi Rumintang (2025) The effect of using authentic materials to vocabulary mastery at The Eighth Grade Students of SMPN 5 Padangsidimpuan. Undergraduate thesis, UIN Syekh Ali Hasan Ahmad Addary Padangsidimpuan.

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Abstract

The purpose of this research is to find out whether authentic material significantly affects on students’ vocabulary mastery or not at the Eighth Grade Students of SMPN 5 Padangsidimpuan. This research uses a quantitative approach in experimental by using pre-test and post-test design. The sample is VIII-1 as experimental group consisted of 28 students, and VIII-3 as control group consisted of 28 students. The data were collected through multiple choices test, and analyzed by using independent sample t-test. The result of this research shows that mean score of experimental group before using authentic material is 52.86 than mean score of experimental group after using authentic material is 79.57. From the result of t-test, tcount>ttable (5.723>2.778), which means that Ha is accepted and Ho is rejected and it is implied that there is a significant effect of Authentic Material on students vocabulary mastery at SMPN 5 Padangsidimpuan. It can be concluded that authentic material is very useful on vocabulary mastery. The researcher recommended authentic material to teach vocabulary mastery at the eighth grade of SMPN 5 Padangsidimpuan.

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