Ketrin Rinayanti Manullang, and Fauziah Anwar. “Implementing the Morning Jarimatika Game As a Finger-Based Numeracy Strategy: A Study at SD 77 Penerokan”. Gateway for Understanding Research in Education 2, no. 1 (July 6, 2026): 46–54. Accessed July 25, 2026. https://gpijournal.com/index.php/guru/article/view/658.