Cárdenas-Soler, Ruth Nayibe, Sandra Piamonte-Contreras, and Patricia Gordillo-Catellanos. 2017. “Development of Numerical Thought. A Strategy: Animaplano”. Pensamiento Y Acción, no. 23 (September):31-48. https://revistas.uptc.edu.co/index.php/pensamiento_accion/article/view/8447.