EFEKTIVITAS VIDEO EDUKASI DALAM MENINGKATKAN PENGUASAAN KOSAKATA DI SMP NEGERI 16 PALU

ABSTRACT
Rahmawati (A12121118). The Effectiveness of Educational Videos in Improving
Vocabulary Mastery at SMP Negeri 16 Palu. Skripsi, English Education Study
Program, Language and Art Department, Teacher Training and Education Faculty,
Tadulako University. Under the Supervisor of Abdul Kamaruddin and Maf’ulah.
This research aimed to find out the effectiveness of educational videos in improving
vocabulary mastery at SMP Negeri 16 Palu. The research employed a quantitative
approach with a quasi-experimental design. The population of this study consisted
of all eighth-grade students in the 2024/2025 academic year, totaling 129 students.
The sample were VIII C as experimental class and VIII E as the control class. The
research instrument consist of pre-test and post-test containing various forms of
vocabulary exercises. The collected data were analyzed using a normality test,
homogeneity test and independent sample t-test through the SPSS 24 program. The
results show that mean score of experimental class student on the post-test was
70.27 which is greater than that of control class 58.93. The significance value (Sig.
2-tailed) is 0.001, which is lower than 0.05, indicating that the null hypothesis (H?)
is rejected and the alternative hypothesis (H?) is accepted. It can be concluded that
the implementation of educational videos, such as animated videos is effective in
improving the vocabulary mastery at SMP Negeri 16 Palu.
Keywords: Effectiveness, Educational Videos, Vocabular mastery, Animated
Videos