A Progressive Teaching Model for Pharmaceutical Organic Chemistry: From Case-Driven Learning to Comparative Evaluation to Innovative Design

This paper describes a three-tier progressive teaching model─“Case-Driven → Comparative Evaluation → Innovative Design”─developed and implemented over three years in a pharmaceutical organic chemistry course. The model addresses a gap in existing chemistry education reforms: while many approaches incorporate case studies or comparative content, they typically treat evaluation as a final assessment step. Our model is designed to position comparative evaluation as an intended cognitive bridge connecting critical analysis with creative design grounded in Bloom’s revised taxonomy and the “Learning by Evaluating” framework. A “Learner-to-Contributor” closed loop is intended to transform outstanding student outcomes into teaching exemplars for subsequent cohorts. Preliminary evidence from two cohorts (n = 198; quantitative outcome data from the 2022 cohort, n = 87) indicated that 60% of student groups proposed improved synthetic routes for drug intermediates, 20% engaged in in-depth argumentation, and 85% explicitly connected their professional aspirations with drug innovation. Two student research outputs were adapted into teaching cases. These outcomes are presented as early indicators of the model’s potential rather than definitive measures of effectiveness. The model offers a potentially adaptable framework that may be relevant to other foundational chemistry courses that aim to cultivate higher-order thinking and professional responsibility.