Agus, M., Penna, M. P., Peró-Cebollero, M., Guàrdia-Olmos, J., & Pessa, E. (2014). The application of graphical representations in estimation of probabilistic events. Ricerche Di Pedagogia E Didattica. Journal of Theories and Research in Education, 9(1), 235–252. https://doi.org/10.6092/issn.1970-2221/4299