Alava, José Bernardo Cobeña, Liseth Estefania Aguirre Vera, Verónica Flores Tipán, and Gissella Valentina Loor Pinargote. 2021. “Problem-Based Learning As a Methodological Strategy in the Teaching-Learning Process”. International Journal of Social Sciences and Humanities 5 (3):232-42. https://doi.org/10.53730/ijssh.v5n3.2028.