1.
Ardiansari L. Pra-Aljabar: Langkah Baru Mengajar Aljabar Awal (Penerapan Didactical Design Research). Proximal [Internet]. 2018 Mar. 1 [cited 2026 Jan. 11];1(1):32-44. Available from: https://e-journal.my.id/proximal/article/view/182