Sudirah, Sudirah. “Application of the Direct Instruction Method in the Learning System to Improve Student Learning Outcomes in Mathematics Subjects in 3rd Grade Elementary Schools”. ISEJ : Indonesian Science Education Journal 1, no. 2 (April 2, 2020): 97-108. Accessed August 2, 2025. https://siducat.org/index.php/isej/article/view/49.