4Practice I is a supplement to The Magic Lens I and is the practice workbook for the fifth level of the MCT language arts curriculum. It contains one hundred sentences, and each sentence uses vocabulary from The Word Within the Word I and the poetic devices studied in Poetry and Humanity. Students work through the sentences using the unique four-level analysis method that is explained in The Magic Lens I. The focus of the sentences is on ancient Greek and Roman history, with particular emphasis on the Latin and Greek stems found in some of the words. Each sentence appears on a separate page with four blank lines beneath it where students can fill in the parts of speech, the parts of the sentence, phrases, and clauses. By examining a wide range of sentences, students will experience the satisfaction of a clear understanding of the principles of English sentences.