This document discusses educational technology and its roles in learning. It begins with defining educational technology as the study and practice of facilitating learning through appropriate technological processes and resources. It then discusses technology as both a boon and bane to learning. When used properly, technology can enhance learning by making it more engaging, but it can also be detrimental when it distracts from or replaces learning. The document outlines a systematic approach to instructional planning that is learner-centered. It also discusses different roles of technology from both traditional and constructivist perspectives, including as a delivery tool, learning tool, information source, and social medium. Finally, it introduces Dale's Cone of Experience and how it relates educational experiences to real life through varying use of