Fazira, Azrina, Siti Askhiya, Salsabila Firdausi, and Nuriana (Nino Adhi). “Penerapan Teori Perkembangan Kognitif Piaget Pada Hukum Kekekalan Berat”. PRISMA, Prosiding Seminar Nasional Matematika 6 (March 9, 2023): 501-505. Accessed May 17, 2024. http://journal.unnes.ac.id/sju/prisma/article/view/66766.