Romero Artavia, Efraín, et al. “Development of Motivation in Secondary Students through the Implementation of an Educational Program in Plastic Arts Based on Cooperative Learning ”. 2020. Cuadernos De Investigación Educativa, vol. 11, no. 2, Dec. 2020, pp. 117-31, doi:10.18861/cied.2020.11.2.2990.