Delpiyani, Delpiyani, Imam Tabroni, Benjamin Brunel, and Milton Alan. “Development of Smart Pocket Learning Media to Improve the Ability to Recognize Number Concepts in Children Aged 5-6 Years”. Journal of Computer Science Advancements 1, no. 3 (August 30, 2023): 147–156. Accessed July 4, 2025. https://www.journal.ypidathu.or.id/index.php/jcsa/article/view/482.