“ PROFILE CONCEPTUAL UNDERSTANDING OF SECONDARY SCHOOL STUDENTS ASSOCIATED WITH CONCEPTUAL CHANGE REGARDING MATERIAL CHANGES”. Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam 24, no. 1 (April 20, 2019): 22–27. Accessed July 1, 2026. https://ejournal-science.upi.edu/jpmipa/article/view/822.