The 18 self-contained centers in Language Arts Centers, Grades 4—6 are presented in folders. The skills practiced include: Antonyms, alphabetical order, parts of speech, synonyms, combining sentences, analogies, kinds of sentences, main idea and supporting details, metaphors and similes, multiple-meaning words, persuasive paragraphs, syllogisms, root words, using commas, write a story, homophones, poetry, and idioms.