P. Alvarado, Carl Christopher. “Communicative Competence in Spiral Progression Curriculum: A Study Reinforcing the Implementation of MATATAG Curriculum in the Philippines”. International Journal of Humanities and Education Development (IJHED) 5, no. 6 (November 10, 2023): 11–29. Accessed March 31, 2025. https://theshillonga.com/index.php/jhed/article/view/28.