THE EFFECT OF THE WORD SEARCH GAME ON WORDWALL TO STUDENTS’ VOCABULARY MASTERY: A QUASI EXPERIMENTAL STUDY AT 11TH GRADE SMK AL-MADANI PONTIANAK

Abstract

PRASETIO WICAKSONO. The Effect of The Word Search Game on Wordwall to Students’ Vocabulary Mastery: A Quasi Experimental Study at 11th Grade SMK Al-Madani Pontianak. Tadris English Research Program. Faculty of Tarbiyah and Teacher Training. State Institute for Islamic Studies Pontianak (IAIN Pontianak), 2026. This research aims to investigate the implementation of the Word Search Game on Wordwall at 11th grade students' vocabulary mastery. It was questioned as follows. First, what is the students’ vocabulary mastery of students before the implementation of Word Search game on wordwall? Second, what is the students’ vocabulary mastery of students after the implementation of Word Search game on wordwall? Third, what is the significance of students’ vocabulary mastery after using wordwall as a learning tool. This research employed a quasi-experimental method with a pretest-posttest control group design. The population was eleventh-grade students of SMK Al-Madani Pontianak. The sample was selected through purposive sampling, consisting of one experimental class (n=17) and one control class (n=17). The research instrument was a vocabulary test (pretest and posttest) validated by experts with CVI=1. Data analysis techniques included descriptive statistics (mean, standard deviation), normality test (Shapiro-Wilk), homogeneity test (Levene's Test), hypothesis testing with Independent Samples t-test, and effect size calculation (Cohen's d). This research found that the Word Search Game on Wordwall had a substantively positive effect on vocabulary mastery, with the experimental group (pretest M=57.53, SD=14.97; posttest M=73.29, SD=11.32) showing greater improvement than the control group (pretest M=55.35, SD=17.49; posttest M=63.47, SD=20.09). Although the group difference was not statistically significant (p=.089), it demonstrated a medium-to-large practical impact (d=0.60), confirming the intervention's educational effectiveness for 11th-grade vocational students.