Sagala PN, Maduma YE. IMPROVING MATHEMATICAL PROBLEM SOLVING CAPABILITY THROUGH A REALISTIC MATHEMATICAL APPROACH WITH STAD TYPE COOPERATIVE MODEL. REKOGNISI [Internet]. 2017 Dec. 1 [cited 2025 Apr. 7];2(2):117-34. Available from: https://jurnal.unusu.ac.id/index.php/rekognisi/article/view/70