The document discusses the roles and functions of educational technology in 21st century education. It states that the goal is to maximize technology's impact to develop 21st century skills and support innovative teaching and learning. It recommends that instruction should be student-centered and collaborative, with learning having real-world context. Technology allows for constant access to information, interaction, and sharing of digital content. Educational technology can help develop 21st century skills, support new teaching approaches, and create robust education systems. Its key functions include improving teaching and learning, enhancing education goals, and aiding teacher training and curriculum development.