The document discusses the roles and functions of educational technology in 21st century education. It outlines that instruction should be student-centered, collaborative, and have real-world context. Technology allows 24/7 access to information, constant social interaction, and easily created/shared digital content. Educators should leverage technology to create engaging, personalized learning environments. Key functions of educational technology include improving teaching and learning, enhancing educational goals, training teachers, developing curriculum and materials, and identifying community needs.