Al Ayyubi II, Putra ALT, Hidayatulloh MB. Effectiveness of Smart Counting in Improving Addition and Subtraction Skills in Early Childhood. GENIUS [Internet]. 2025 Nov. 21 [cited 2026 Sep. 22];1(2):127-51. Available from: https://journal.bustanululum.ac.id/index.php/Genius/article/view/321