This document discusses the importance of language acquisition in 21st century education. It defines language acquisition as how humans learn to perceive, comprehend, produce and use language to communicate. The document notes that language acquisition enhances mental development, career opportunities, and cultural understanding. It explains that classrooms are more diverse now and technology allows for more language interaction beyond the classroom. An example is given of students using video technology to explain a grammar rule. The role of technology in facilitating language learning through translation, communication with other students, and social media is also discussed. The conclusion emphasizes that students must learn to use language and technology gives it greater relevance.