The book is unusual in that it offers both programmed and nonprogrammed material. Each type of material is designed to provide students with the maximum amount of involvement and practice. The students do not simply read definitions of words, as is the case with some courses. Rather, they engage in many different activities; not only defining words but analyzing and building them, and learning to use context to derive meaning. The programmed approach enables students to do the work on their own and receive immediate checks of their answers. Classroom time, therefore, is free for review, reinforcement of programmed activities, work on the nonprogrammed material, and attention to the needs of individual students. The book also includes at the end a set of Supplementary Exercises for each unit. The nonprogrammed materials include "Review Exercises," "Words of Interesting Origin," "Easily Confused Words," and "Latin Phrases." These provide practice in concepts learned in the unit and an opportunity to explore a wide variety of topics, such as eponymous words and the literal meanings of Latin expressions used in English.