Problem based learning is a student-centered pedagogy where students learn by solving open-ended problems. It originated from medical school in the 1960s and has since spread worldwide. The goals are to develop flexible knowledge, effective problem solving skills, self-directed learning, collaboration skills, and intrinsic motivation. Students work in groups to identify what they know and where to access new information to help resolve the problem. The instructor facilitates learning by supporting, guiding, and monitoring the process.