Indah Indasah, Dewi MK. The Optimizing Early Childhood Problem Solving Skills through a System Thinking Approach in Learning: Optimizing Early Childhood Problem Solving Skills through a System Thinking Approach in Learning. INCOILS [Internet]. 2026 Apr. 2 [cited 2026 Apr. 3];5(1). Available from: https://incoils.or.id/index.php/INCOILS/article/view/523