Perspectives is a four-skills series in American and British English that teaches learners to think critically and to develop the language skills they need to find their own voice in English. The carefully-guided language lessons, real-world stories, and TED Talks motivate learners to think creatively and communicate effectively. In Perspectives, learners develop an open mind, a critical eye and a clear voice in English.

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Daniel Barber is a teacher, trainer and writer based in Cádiz, Spain. He's taught classes of all types and ages over more than twenty years as well as tutoring and directing Trinity TESOL courses and managing his own school. He is an author for National Geographic Learning's secondary series Perspectives and Look, a seven-level series for young learners of English. His interests include motivation in learning, coaching approaches to teaching English and the science of learning and the brain.Amanda Jeffries is a teacher, trainer and author. She grew up in the north of England and after graduating in Modern Languages from Oxford University, did her DELTA and then MA in TEFL at Reading University. She has taught in Chile and in the UK, where her work has included teaching in private language schools, examining for Cambridge exams, running a distance learning Masters course in ELT, and working as Academic Advisor for Language Teaching at Oxford University. She is now based in Oxford, UK, where she teaches English and communication skills to university students and runs training workshops for teachers. She has written English language teaching materials for several major publishers, specialising in advanced English. She has taught in the UK and Chile.Lewis got his first taste of teaching English in Barcelona in the late 1980s. The experience inspired him to get a Master's in TESOL, after which he taught at a university language centre in Arizona and then a manufacturing company in Japan. In 1995, he took an editorial job with a major publisher in Hong Kong developing materials for Asia, and in 1997 became a freelance editor, project manager and writer in the UK. He has worked on books, videos, tests, audio materials, worksheets, apps and online materials for English learners of all ages across the world. He currently lives in York.