The document discusses the roles and functions of educational technology in 21st century education. It outlines that 21st century education aims to prepare students to succeed in an increasingly competitive world by developing proficiency in 21st century skills and maximizing the use of technology to support innovative teaching and learning. Instruction should be student-centered and collaborative, where students learn how to acquire new information and solve problems on their own or together. Technology allows constant access to information and social interaction, and aids important functions of education like improving teaching, learning, developing curriculum and materials, and training teachers.