The document discusses Project-Based Learning (PBL) as integrated into the NAF curriculum. It defines PBL as involving student-driven inquiry projects that teach central concepts through solving realistic problems. The NAF curriculum incorporates PBL through culminating projects at the end of each course that encourage cross-disciplinary collaboration. The document outlines essential elements of high-quality PBL projects and steps instructors can take to plan and support successful student-driven PBL in the classroom.