Technology-enhanced active learning, or TEAL, is an alternative method of teaching that MIT pioneered. Led by Professor John Belcher, the TEAL approach showed that it was possible to challenge the passive or recitation style of teaching, common in large classes and re-enforced by lecture halls architecture. Despite having excellent math results, many first-year students had not transitioned across to the way lecturers teach and 40% of students dropped out of first year physics education at MIT. The TEAL approach set out to assist students to "visualize, develop better intuition about, and conceptual models" of scientific concepts.