This document discusses educational technology and its importance in schools. It defines educational technology as using educational methods and resources to facilitate learning. It describes Edgar Dale's Cone of Experience, which illustrates how different types of instructional methods can affect learning. It also discusses principles for selecting and using instructional materials, and the role of information technology in educational technology. The document emphasizes that educational technology helps engage students, enhance understanding, and better prepare them for the modern world. However, technology should not replace teachers, but rather be used as a tool to help facilitate the learning process.