S. FEBRINA SRI MULYANI; ANDRI ANUGRAHANA. Development of counting board media based on the Montessori method to improve mathematics skills in grade I elementary school students. JURNAL PENDIDIKAN DAN SAINS, [S. l.], v. 3, n. 1, 2023. Disponível em: https://jupisi.untara.ac.id/index.php/jupisi/article/view/49. Acesso em: 4 jul. 2024.