Problem based learning via open ended projects in Carnegie Mellon University's Chemical Engineering undergraduate laboratory

Following an extensive physical renovation of our undergraduate Chemical Engineering laboratory, revisions in the philosophy and practice of the laboratory courses were made. We sought to add flexibility and variety to the experiments that can be performed in our lab space while using space more efficiently. Further, problem-based learning (PBL) methods were applied to experiments so students could hone skills in solving open ended problems while meeting other educational and behavioral objectives. This paper discusses the application of PBL in our undergraduate chemical engineering lab courses, considers how modular and mobile equipment facilitates this learning approach, and offers some preliminary findings.