Structured word inquiry
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Structured Word Inquiry (SWI) is a pedagogical technique that involves the scientific investigation of the spelling of words. SWI emphasizes the scientific exploration of word structure through morphology, etymology, related words, and phonology. The guiding principles of SWI are (1) "the primary function of English spelling is to represent meaning" and (2) "conventions by which English spelling represents meaning are so well-ordered and reliable that spelling can be investigated and understood through scientific inquiry."