Fauzi, Ahmad Ridha (2018) The Effectiveness of Duolingo in Improving Vocabulary Ability at the Sixth Grade of Madrasah Ibtidaiyah Darul Ilmi Banjarbaru School Year 2017/2018. Skripsi, Tarbiyah dan Keguruan.

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ABSTRAK

Vocabulary is a list of word in particular language. Vocabulary is the special set of words used in particular kind of work, business, economic, technology, etc. The objective of this research is to find out the effectivness Duolingo application for improving vocabulary ability at the sixth grade of Madrasah Ibtidaiyah Darul Ilmi and its effect on students’ vocabulary achievement. The design of this research was experimental research which belongs to quantitative method. The population of this research was the entire sixth grade of Madrasah Ibtidaiyah Darul Ilmi Banjarbaru. There were two classes, they were VIB consisted of 25 students who got treatment using Duolingo application and VIA consisted of 26 students who got treatment using conventional teaching. The instrument of the research was vocabulary test consisted of multiple choice. Before treatment, pre-test was conducted to both groups. Meanwhile, post-test was conducted after the treatment. Then, the data were analyzed by using SPSS ( Statistical Product and Service Solutions) for Windows version 22.0. The result of this thesis shows that at the sixth grade using Duolingo application score is 7.279 (t-count is higher than t-table), while at the sixth grade without using Duolingo application score 2.021 (t-count is lower than t-table). The t-test calculation showed that there was a significant difference who used Duolingo application and who did not use Duolingo application. It mean that Ho was rejected and Ha was accepted. So, Duolingo application was effective to improve English vocabulary at the sixth grade of Madrasah Ibtidaiyah Darul Ilmi.

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