The Natural Approach is a language teaching method developed by Tracy Terrell and Stephen Krashen, published in The Natural Approach: Language Acquisition in the Classroom (1983). It represents the practical classroom application of Krashen's Monitor Model hypotheses, particularly the centrality of comprehensible input (i+1) and the distinction between acquisition and learning.
Krashen and Terrell identify four developmental stages:
Activities prioritise meaning over form: Total Physical Response, picture-based storytelling, dialogues, charts, maps, and games that generate comprehensible input. Explicit error correction is avoided because it is seen as raising the affective filter without contributing to acquisition.
The Natural Approach has been critiqued for overreliance on input at the expense of output, for undervaluing the role of explicit grammar instruction (challenged by Focus on Form research), and for vagueness about how i+1 is operationalised in practice.