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: http://www.mso.anu.edu.au/pfrancis/pbl/paper/node9.html
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PBL clearly encourages students to think deeply about the subject matter, and is very popular with students. The workload involved in preparing the exercises is, however, large, and student group-work and time management are problems. With experience, however, I hope that these problems can be minimised. The exercises appear to work better when run in class time.