MIT OpenCourseWare OCW HomeUnlocking knowledge, Empowering Minds. Free lecture notes, exams, and videos from MIT. No registration required. Learn More about the OCW mission March 12: One day, 24 hours, a lifetime of impact MIT knowledge has changed the world. On March 12, 2026, as part of MIT’s giving day—the MIT 24-Hour Challenge—OpenCourseWare learners and friends like you will be supporting our efforts to keep this knowl
