This document discusses the various roles of educational technology in improving the teaching and learning process. It analyzes how educational technology can help: 1) improve teaching quality by developing theories of teaching; 2) analyze the teaching-learning process by studying variables and relationships; and 3) improve learning by facilitating more learning in less time. It also discusses how educational technology assists in fixing education goals, training teachers, developing curriculums, teaching materials, and strategies. Finally, it helps develop audio-visual aids and identifies needs to help improve the overall education system.