This document provides an overview of educational technology 2. It introduces key concepts like using technology to reinforce, supplement, and extend learner's knowledge and skills. It discusses how technology can be used as a medium for instruction through projects, creating solutions to problems, and developing skills like information fluency, collaboration fluency, and digital ethics. The document also outlines how computers can serve as information tools, communication tools, co-constructive tools, constructive tools, and situating tools to enhance the teaching and learning process.