Early Childhood Supervision Managerial Supervision Management to Improve Managerial Competence of Playgroup Leaders: (Case Study at Calakan Playgroup in Ciburial Village, RT. 02/05 Cibogo Village, Lembang District, West Bandung Regency). Journal of Islamicate Studies, v. 5, n. 1, p. 1–27, 30 Jan.2022.