How do you know that you've actually done it, that you've actually gone beyond regurgitation to in-depth learning? Follow the links to find out.
Problem-Based Learning This University of Delaware site is probably the most comprehensive web page on problem based learning (PBL). According to one of the site developers and PBL researcher, Barbara Duch, "Problem based learning (PBL) is an instructional method that challenges you to 'learn to learn,' working cooperatively in groups to seek solutions to real world problems."
McMaster University's PBL Page More than just problem-based-learning, this site goes "deeper." A model program on teaching students problem solving using problem-based learning (PBL) combined with cooperative learning. Includes examples of problems and the deepest way to get at the correct answers.