This workbook is designed to help students expand their spelling, vocabulary, and comprehension skills through the study of roots, prefixes, and suffixes. Noting that roots, prefixes, and suffixes are the building blocks upon which all words are formed, the introduction contends that a thorough knowledge of these elements will greatly enhance vocabulary and improve understanding of unfamiliar words. In addition, the introduction defines root, prefix and suffix and explains how to do the activities in the workbook. The introduction concludes with a pretest/posttest, and a student introduction follows which includes warm-up exercises focused on identifying Latin word parts, prefixes, suffixes, and thinking about meaning. The workbook then presents the student exercises. Twelve extension worksheets, intended for assessment or additional practice, and two independent study worksheets follow the exercises. Includes an answer key and the word roots dictionary. (PM)