THE EFFECTIVENESS OF CROSOWRD LABS WEBSITE ON STUDENTS' VOCABULARY MASTERY

Abstract

This study aims to examine the effectiveness of Crossword Labs, a digital platform, in improving the English vocabulary mastery of eighth-grade students at SMP Ma'arif Bongas. The background of this study is the need for more interactive and relevant learning methods, given the lack of studies that specifically examine the use of digital crossword puzzle platforms. This research is a new contribution by applying interactive technology to increase motivation and learning outcomes. This study used a quantitative method with a quasi-experimental design, where 60 students were divided into an experimental group using Crossword Labs and a control group learning conventionally. Data were collected through pre-tests and post-tests, then analyzed using a t-test. The results showed a significant increase in the vocabulary scores of the experimental group, with an average gain score of 0.7912, much higher than the control group, which only scored 0.3504. The significant t-value proves that the use of Crossword Labs is effective in improving students' vocabulary mastery, making it a valuable innovation in language learning.