Our World is a six-level primary series in American English and British English, bringing age-appropriate National Geographic content to young learners of English. Our World brings together fun and fascinating information about the real world, supported by stunning National Geographic images and video. It gives young learners of English the essential language, skills, and knowledge needed to understand their world – all while learning English. - See more at: http://www.cengage.com.br/els/our-wor
