The Whole Language theory emphasizes teaching foreign languages in a natural, holistic way without dividing the language into separate components like grammar and vocabulary. It focuses on authentic activities like reading real texts and writing for a genuine audience. Learning is student-centered, with the teacher as a facilitator rather than expert. The goal is for students to use the language in meaningful, real-world contexts. While popular in the 1980s, critics argue it rejects principles of traditional ESL teaching by not directly teaching language skills.