Nael, Michael Molina. “Effects of Happy Emotion Induced by Filipino Children’s Music on the Performance in Addition and Subtraction of Grade I Filipino Pupils”. Journal of Research, Policy & Practice of Teachers and Teacher Education 9, no. 1 (June 17, 2019): 33–45. Accessed November 23, 2024. https://ojs.upsi.edu.my/index.php/JRPPTTE/article/view/2344.