This document discusses content-based instruction (CBI), a method of language instruction that integrates content and language learning rather than separating them. CBI focuses on using content from a subject area as the vehicle for developing language skills. The key features of CBI are that it uses authentic texts and materials from a content area as the core material for instruction, has the dual goals of developing both content knowledge and language skills, and requires students to use the target language. CBI has been shown to be effective for language learners of various ages and backgrounds.