Traditional spelling instruction has students studying words out of the context of authentic reading and writing. This type of instruction does little to move students to become mature writers. Spelling is a development process. The ability to spell is enhanced by wide reading and writing. Proficiency in spelling is related to one's visual memory more so than to instruction which examines words in isolation. Word class is an approach to spelling that combines a self-selected approach to spelling instruction and thinking skills. This approach to spelling instruction helps students become more sensitive to letter patterns and word parts, adds depth and dimension to their vocabulary, teaches thinking skills, creates more authentic thinking and writing experiences, and values students' ideas.
Johnson, A. P. (1998). Word Class: Using Thinking Skills to Enhance Spelling Instruction. Reading Horizons: A Journal of Literacy and Language Arts, 38 (4). Retrieved from https://scholarworks.wmich.edu/reading_horizons/vol38/iss4/3