Students can learn to spell better by recognizing and applying letter patterns, instead of memorizing twenty new words each week. Andover's Integrated Reading System (AIRS), a mastery learning language arts program, contains a spelling module called "structural skills" that helps children learn in this way. It is based upon the generalizations of eight structural skills: plurals, derived words, possessives, contractions, root words, hearing syllables, syllabication, and prefixes/suffixes.
Harris, J. (1990). DisSPELLing a myth. Logo Exchange, 9(3), 11-13.