Sellina Ayu Kusumaningrum, & Heni Pujiastuti. (2021). ANALYZING STUDENTS’ UNDERSTANDING OF MATHEMATICAL CONCEPT ABOUT TWO-DIMENSIONAL FIGURES AT GRADE III OF ELEMENTARY SCHOOLS IN SERANG. Primary: Jurnal Pendidikan Guru Sekolah Dasar, 10(5), 1142-1151. https://doi.org/10.33578/jpfkip.v10i5.8417