Farhan, A., Asnawi, Harianto II, & Risnawaty. (2025). The Development of English Vocabulary Teaching Material Through Cooperative Learning for Grade Vii Students of Smps Langkat Binjai 2025/2026. International Journal of Educational Research Excellence (IJERE), 5(1), 94–101. https://doi.org/10.55299/ijere.v5i1.1636