“Metode Montessori Berbantu Alat Peraga Matematika Berbahan Limbah Karet Spons untuk Mengembangkan Partisipasi Aktif Siswa SD: Montessori Method Assisted Math Tools Made from Rubber Sponge Waste for Developing Elementary Students Active Participation” (2019) Pedagogia : Jurnal Pendidikan, 8(1), pp. 85–94. doi:10.21070/pedagogia.v8i1.1794.