Problem-based learning (PBL) is a pedagogical approach where students learn through solving open-ended problems. In PBL, students work collaboratively in small groups to identify learning needs and find information to solve problems. The instructor acts as a facilitator rather than lecturer. PBL aims to develop students' critical thinking, collaboration skills, and self-directed learning. It is used in teacher education to model how students may apply PBL in their own teaching by engaging them in authentic problems and gradually reducing guidance. While challenging to implement, PBL is believed to increase engagement and transfer of learning by simulating real-world problem solving.