1. Educational technology evolved from the 1700s to 1900 with the introduction of the tutorial system, monitorial system, and inquiry method.
2. From 1900-present, it evolved with the introduction of the reflective method, operant conditioning, and nourishing method.
3. Educational technology is defined as the systematic application of both scientific and technological knowledge to designed the process of human learning and solving problems related to all aspects of human learning. It aims to bring about more effective instruction.