The document discusses the roles and functions of educational technology in the 21st century. It states that technology allows for 24/7 access to information, constant social interaction, and easily created and shared digital content. It also enables students to explore knowledge by constructing representations of real-world problems and perspectives of others. Additionally, technology serves as a social medium to support learning through collaboration and building consensus. Finally, technology functions to improve teaching and learning, enhance educational goals, develop curriculum and materials, and help identify community needs.