“The Resolution of Problems and Their Impact on the Teaching of Numerical Thinking in 3rd Grade Students of the Yati Educational Institution”. Docentes 2.0 Journal 7, no. 2 (September 21, 2019): 123–131. Accessed September 5, 2026. https://www.docentes20.com/revista-electronica/index.php/revista-docentes20/article/view/19.