Doungngamying, C., Thewanprathanporn, T., Rodphol, N., Kanorm, S., Yongyingchao, S., Chotchuang, C. and Sitsungnoen, C. 2025. The Development of a Supervision Model Based on Lesson Study Combined with Feedback to Enhance Teachers’ Competence in Implementing TPACK for Promoting Primary School Students’ English-Speaking Skills. Interdisciplinary Academic and Research Journal . 5, 6 (Nov. 2025), 413–432. DOI:https://doi.org/10.60027/iarj.2025.286830.