By providing spelling exercises, skills practice, reviews, and quizzes, these Spelling Power Workbooks give students the practice they need to improve their spelling and writing ability and to expand their vocabulary. The spelling words, patterns, and concepts taught throughout Spelling Power have been carefully selected on the basis of current research in word study. Sources such as The Reading Teacher’s Book of Lists, authored by readability experts Edward Bernard Fry, Jacqueline E. Kress, and Dona Lee Fountoukidis, and The Living Word, a national vocabulary inventory by Dale Edgar and Joseph O’Rourke, identify words students typically misspell at each grade level, so the words selected for study in these workbooks are developmentally appropriate. They also reflect the varied interests and vocabulary of today’s students. The Teacher Annotated Editions include the answer keys.