Relationship
Historically, CLT has been seen as a response to the Audio-Lingual Method (ALM), and as an extension or development of the Notional-Functional Syllabus.
Audio-Lingual Method
The Audio-Lingual Method (ALM) arose as a direct result of the need for foreign language proficiency in listening and speaking skills during and after World War II. It is closely tied to behaviorism, and thus made drilling, repetition, and habit-formation central elements of instruction. Proponents of ALM felt that this emphasis on repetition necessitated a corollary emphasis on accuracy, claiming that continual repetition of errors would lead to the fixed acquisition of incorrect structures and non-standard pronunciation.
In the classroom, lessons were often organized by grammatical structure and presented through short dialogs. Often, students listened repeatedly to recordings of conversations and focused on accurately mimicking the pronunciation and grammatical structures in these dialogs.
Critics of ALM asserted that this over-emphasis on repetition and accuracy ultimately did not help students achieve communicative competence in the target language. They looked for new ways to present and organize language instruction, and advocated the notional functional syllabus, and eventually CLT as the most effective way to teach second and foreign languages.
Notional Functional Syllabus
A notional-functional syllabus is more a way of organizing a language learning curriculum than a method or an approach to teaching. In a notional-functional syllabus, instruction is organized not in terms of grammatical structure as had often been done with the ALM, but in terms of “notions” and “functions.” In this model, a “notion” is a particular context in which people communicate, and a “function” is a specific purpose for a speaker in a given context. As an example, the “notion” or context shopping requires numerous language functions including asking about prices or features of a product and bargaining. Similarly, the notion party would require numerous functions like introductions and greetings and discussing interests and hobbies. Proponents of the notional-functional syllabus claimed that it addressed the deficiencies they found in the ALM by helping students develop their ability to effectively communicate in a variety of real-life contexts.