Surtiyem, S., Nurhayati, L. and Yulia, Y. 2026. Using Crossword Puzzle to Increase Students’ Vocabulary Mastery in Junior High School. Journal of Science and Education (JSE). 6, 2 (Feb. 2026), 1528-1539. DOI:https://doi.org/10.58905/jse.v6i2.766.