Lasmana TFM, Amir MF. Characteristics of Student Mental Models in Negative Round Numbers: Karakteristik Model Mental Siswa Pada Bilangan Bulat Negatif. icecrs [Internet]. 2020 Jun. 18 [cited 2025 Oct. 5];8. Available from: https://icecrs.umsida.ac.id/index.php/icecrs/article/view/435