Simanjuntak J, Marbun S. The Role of Teachers in Teaching Children Who Have Symptoms of Hyperactive Behavior in Group B of the TK Yayasan Perguruan Gajah Mada Medan Timur . IJAR [Internet]. 2023 Aug. 31 [cited 2025 Apr. 19];2(8):1193-200. Available from: https://journal.formosapublisher.org/index.php/ijar/article/view/5401