Pitron NA, Sauhana N, Redina AS, Fajriyanti AN, Mawardi M. Improving Mathematics Learning Outcomes in Addition and Subtraction Through the Direct Instruction Model among Third-Grade Elementary School Students. ptk [Internet]. 2026 Jul. 22 [cited 2026 Jul. 22];3(4):1-12. Available from: https://edu.pubmedia.id/index.php/ptk/article/view/2858