“VALIDITAS E-MODUL BERBASIS PROBLEM BASED LEARNING MATERI UKURAN PENEMPATAN DAN UKURAN KERAGAMAN DATA”. Pedagogy: Jurnal Pendidikan Matematika 8, no. 2 (November 13, 2023): 291–303. Accessed April 2, 2026. https://e-journal.my.id/pedagogy/article/view/3093.