Zoom-sandwiched cross-chapter concept map: a novel model to optimize a concept map project in online STEM courses

This research aims to optimize the concept map project for STEM courses in the virtual delivery system and to explore its effectiveness. Specifically, we 1) established the “Zoom-sandwiched cross-chapter concept map” model in an online STEM course; 2) evaluated student performance on concept map construction; 3) distributed survey questions to investigate student perception toward the Zoom-sandwiched cross-chapter concept map model; and 4) further explored the mechanism of how this model promoted student learning.