This document discusses the roles and functions of educational technology in the 21st century. It states that the goal of 21st century education is to prepare students to succeed in a competitive global world. It emphasizes that instruction should be student-centered, collaborative, and provide real-world context. Technology allows for ubiquitous access to information, constant interaction, and easily created digital content, enabling more engaging and personalized learning. Educational technology aims to improve teaching and learning, enhance educational goals, train teachers, develop curriculum and materials, and help identify community needs. Its functions include analyzing the teaching-learning process, facilitating learning, and helping with overall educational improvement.