The Implementation of Problem-Based Learning (PBL) Integrated With the Peer-Mediated Instruction and Intervention (PMII) Cooperative Learning Model of the Class-Wide Peer Tutoring (CWPT) Type to Improve Motivation, Learning Activities, and Learning Outcomes of Biology Students in the Plant Physiology Course, Biology Education Study Program, STKIP-PI Makassar. cb 2018, 1 (1), 11-18.