From a Small Boat to an Ocean-Going Vessel: A Drug Delivery System Outreach Demonstration for Middle School Students

Drug delivery systems (DDS) represent a fascinating research topic in materials science and polymer chemistry with significant relevance to both daily life and cutting-edge scientific research. This study presents an innovative outreach program designed to introduce DDS knowledge to middle school students through a “knowledge relay” model. In this educational framework, undergraduate students serve as intermediaries who first acquire knowledge from professors, subsequently process and adapt the content, and ultimately deliver it to younger learners. The outreach program consists of a 55 min instructional session, followed by a 10 min hands-on experiment. The lesson begins with an introduction to cancer treatment, a common yet not fully conquered medical challenge, serving as a context to introduce the concept of DDS. Subsequently, the instructional content systematically covers the materials, functions, evolutionary development, and medical applications of DDS. To enhance student comprehension, the developmental progression of DDS is analogous to the technological advancement from a small boat to an ocean-going vessel. Furthermore, the lesson incorporates problem-based learning (PBL) methodologies to foster active student participation and promote critical thinking skills during the outreach activities. The educational impact was evaluated through multiple assessments, including pre- and post-class questionnaires, a post-class examination, and follow-up interviews. Results demonstrate that the synergistic combination of PBL strategies and metaphorical explanations in this outreach program effectively conveyed DDS concepts to middle school students, while stimulating their interest in chemistry and scientific inquiry.