This document discusses problem-based learning (PBL), an active learning method where students learn through solving real-world problems. It defines PBL, outlines its key characteristics such as being student-centered and collaborative. The process of PBL involves students confronting problems, identifying what they know and need to learn, researching solutions, and presenting them. Advantages include deeper engagement and comprehension and better problem-solving and lifelong learning skills through a more meaningful learning process. Disadvantages can include heavy demands on staff time and stress for students and staff, as well as difficulties implementing with large class sizes.