Peningkatan Representasi Matematis Siswa SMA Melalui Penerapan Model Pembelajaran Kooperatif Tipe Assisted Individualization Tahmil Tahmil, Kadir Kadir, Ruslan Ruslan Jurnal Pembelajaran Berpikir Matematika (Journal of Mathematics Thinking Learning) Vol. 7 No. 1 2022 DOI 10.33772/jpbm.v7i1.25672