Panggabean, R.F.S.B. and Tamba, K.P. 2020. KESULITAN BELAJAR MATEMATIKA: ANALISIS PENGETAHUAN AWAL [DIFFICULTY IN LEARNING MATHEMATICS: PRIOR KNOWLEDGE ANALYSIS]. JOHME: Journal of Holistic Mathematics Education. 4, 1 (Nov. 2020), 17–30. DOI:https://doi.org/10.19166/johme.v4i1.2091.