This fully revised third edition of Summit prepares confi dent speakers to navigate the social and professional situations they will encounter in their lives. Summit delivers immediate, demonstrable results through its goals- and achievement-based pedagogy and continual recycling of language. The two levels of Summit can be used with Top Notch as the fi fth and sixth books in a complete six-level series.

Summit helps the high-intermediate learner continue to grow through a balanced development of both fluency and accuracy. Summit offers a unique conversational syllabus and extensive opportunities for discussion, debate, presentations, and projects as well as contextualized grammar review, expansion, and practice. Summit prepares students for academic study through development of word skills, reading and listening skills and strategies, and critical thinking. MyEnglishLab for Summit is a powerful online learning tool for personalized practice and assessment.

Wind energy’s bestselling textbook- fully revised. This must-have second edition includes up-to-date data, diagrams, illustrations and thorough new material on: the fundamentals of wind turbine aerodynamics; wind turbine testing and modelling; wind turbine design standards; offshore wind energy; special purpose applications, such as energy storage and fuel production. Fifty additional homework problems and a new appendix on data processing make this comprehensive edition perfect for engineering students. This book offers a complete examination of one of the most promising sources of renewable energy and is a great introduction to this cross-disciplinary field for practising engineers. “provides a wealth of information and is an excellent reference book for people interested in the subject of wind energy.” (IEEE Power & Energy Magazine, November/December 2003) “deserves a place in the library of every university and college where renewable energy is taught.” (The International Journal of Electrical Engineering Education, Vol.41, No.2 April 2004) “a very comprehensive and well-organized treatment of the current status of wind power.” (Choice, Vol. 40, No. 4, December 2002)

Grammar Explorer prepares students for academic success through captivating National Geographic content and assignments that mirror the requirements of academic life. Going beyond clear grammar charts and instruction, Grammar Explorer challenges students to think critically while using grammar in their listening, speaking, reading, and writing.