It is planned to give a solid basis of the structures and vocabulary of English. Each book contains material for about a year's work, the vocabulary rising to some 3,000 words.The Teacher's Books provide notes on each lesson, the vocabulary to be taught, supplementary grammatical material and answers to exercises.In this new edition some of the grammatical sections have been, rewritten and expanded, and parts of the text and many illustrations have been brought up to date. Fundamentally, however, the new edition remains the same as previous editions.