1. Problem/project-based learning involves students exploring real-world problems and challenges through sustained cooperative investigation. Students learn thinking strategies and domain knowledge through this active learning approach. 2. Key features include learning being initiated by a problem, problems being based on complex real-world situations, and students working in permanent groups to identify appropriate resources and solve problems. 3. Benefits include improved problem solving abilities, development of critical thinking skills, and linking of theory to practice. It is a more student-centered approach compared to traditional teaching.