Loo, Chuang Heng, and Mohd Nihra Haruzuan Mohamad Said. “Effects of Digital Game-Based Learning Apps Based on Mayer’s Cognitive Theory of Multimedia Learning in Mathematics for Primary School Students”. Innovative Teaching and Learning Journal, vol. 4, no. 1, May 2021, https://itlj.utm.my/index.php/itlj/article/view/49.