Sala-Sebastià, Gemma, Adriana Breda, and Danyal Farsani. “Future Early Childhood Teachers Designing Problem-Solving Activities”. Journal on Mathematics Education 13, no. 2 (June 10, 2022): 239–256. Accessed November 22, 2024. http://jme.ejournal.unsri.ac.id/index.php/jme/article/view/96.