Wahidah, Nina Ikhwati, Wiwin Rita Sari, Ike Festiana, and Nasir Nasir. 2020. “Game Based Learning: Design a Multimedia With DDD-E Model for Mathematics Education”. International Journal of Emerging Technologies in Learning (iJET) 15 (21):pp. 277-284. https://doi.org/10.3991/ijet.v15i21.16353.