Warmansyah J, Azizah F, Yuningsih R, Sari M, Nurhasanah N, Amalina A, Utami WT. The Use of an Open-Ended Learning Approach on The Ability To Recognize The Concept of Numbers: Its Effectiveness for Children 4-5 Years Old. CEJ [Internet]. 2023Nov.28 [cited 2024Nov.21];5(2):110-9. Available from: https://journal2.unusa.ac.id/index.php/CEJ/article/view/4225