This document discusses language acquisition and the importance of learning a second language. It defines language acquisition as the process of learning to perceive, comprehend, produce and use language to communicate. The document notes that learning a second language as a child is easier than as an adult, and that becoming bilingual broadens one's worldview, develops intellectual abilities, and expands job opportunities. It also explores how technology can support 21st century language learning through games, videos, songs, video chatting with native speakers, and smart board activities.