PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIS SISWA. lentera [Internet]. 2021 Oct. 14 [cited 2026 Apr. 24];14(2):291-300. Available from: https://jurnal.stkippgribl.ac.id/index.php/lentera/article/view/76