Pulungsari, Mohamad Wegik, and Isti Hidayah. “Comparison Effectiveness of Concrete and Digital Mathematics Learning Media: Systematic Literature Review on Industrial Revolution 4.0 Era”. Journal of Education Method and Learning Strategy 2, no. 03 (June 30, 2024): 957–965. Accessed August 19, 2025. https://risetpress.com/index.php/jemls/article/view/963.