Divanti ZA, Widayati S, Simatupang ND, Rahmaningrum A. Development of BAMSI (Busy Book for Numbers Six and Nine) as a Learning Medium for Number Recognition among Children Aged 5–6 Years . JIEPP [Internet]. 2026Apr.10 [cited 2026Apr.14];6(1):1-12. Available from: http://journal.ainarapress.org/index.php/jiepp/article/view/1204