Surtiyem, Surtiyem, Lusi Nurhayati, and Yuyun Yulia. 2026. “sing rossword uzzle to ncrease Students’ ocabulary astery in unior igh chool”. ournal of cience and ducation (JSE) 6 (2):1528-39. https://doi.org/10.58905/jse.v6i2.766.