Under the global imperative of “Green Manufacturing” traditional teaching in Material Preparation and Processing faces challenges regarding abstract processes and insufficient environmental integration. To address this, we introduce the O-PIRTAS (Objective, Preparation, Instructional Video, Review, Test, Activity, Summary) flipped classroom model, guided by Outcome-Based Education (OBE). The course was reconstructed using the “Process-Structure-Properties-Performance” four-element logic and virtual simulation tools to visualize energy-intensive mechanisms. By establishing a “Theory–Simulation–Verification” closed loop, the model effectively narrows the chasm between theoretical learning and sustainable engineering practice. Using the “Liquid Metal Forming” module as a case study, results from three teaching cycles (2022–2025) demonstrate significant improvements: core objective achievement rose to 0.81, average final scores increased by 5 points, and the proportion of high-achieving students increased by 15%. This reform effectively enhances students’ comprehensive design capabilities, providing a valid paradigm for cultivating applied talents with an awareness of resource efficiency.
Cai Tingting (Thu,) studied this question.