Their Infantry and GThe Teacher's Book contains methodological recommendations, tips on how to use the course materials, additional activities and games, audio scripts and answers. The set includes audio and video CDs for working with the textbook.

On the publisher's website, answers and audio scripts, stickers, flashcards, copying materials, and audio materials are available for teachers with a password.

Our World is a series of textbooks with fun, engaging information about the world around us, featuring carefully balanced lessons and exercises to develop all language skills, interesting photos, and authentic National Geographic materials. All this motivates students to explore the world and learn a new language.