The Application of Crossword Puzzle Media by Using Alphabet Card for Improving Students’ Vocabulary Mastery (A Classroom Action Research at Rumah Tahfidz Nurul Mubin Langsa)

The objective of this study was to improve students’ vocabulary mastery through crossword puzzle by using alphabet card at Rumah Tahfidz Nurul Mubin. This study was a Classroom Action Research (CAR). It consisted of two cycles with three meetings in each one. The subjects of the study were students at Rumah Tahfidz Nurul Mubin consist of 17 students (11 females and 6 males). The data collecting technique used observation, interview, and test. Observation was conducted during the teaching and learning process and interview the teacher and the students conducted after the test. The steps of the study used Kemmis and Mctaggart of with CAR design consisted of planning, implementation, observations, and reflections. The finding of this study revealed that the use of crossword puzzle as media by using alphabet card improve students’ vocabulary mastery at Rumah Tahfidz Nurul Mubin Langsa. Minimum Mastery Criterion (KKM) that has been determined is 75. The results of the research showed that there is improvement of the students’ vocabulary, as can be seen at cycle I, students’ mean score was still 62,64. Then, in cycle II improve to 86,11.There was an improvement in the percentage of learning who reach the standard score (≥75) which was about 35,29% at the first cycle. The number then rose significantly up to 100% in cycle 2. Implementing alphabet cards the students became more confident to arrange the word, spell the word and easier to memorize new words. It also engaged the students to participate more in the learning activities and they also get more chance to practice. It can be concluded that, the implementation of crossword puzzles develops the students’ vocabulary mastery.