Science in secondary schools has tended to be viewed mainly as a 'practical subject', and language and literacy in science education have been neglected. But learning the language of science is a major part of science education: every science lesson is a language lesson, and language is a major barrier to most school students in learning science. This accessible book explores the main difficulties in the language of science and examines practical ways to aid students in retaining, understanding, reading, speaking and writing scientific language. Jerry Wellington and Jonathan Osborne draw together and synthesize current good practice, thinking and research in this field. They use many practical examples, illustrations and tried-and-tested materials to exemplify principles and to provide guidelines in developing language and literacy in the learning of science. They also consider the impact that the growing use of information and communications technology has had, and will have, on writing, reading and information handling in science lessons. The authors argue that paying more attention to language in science classrooms is one of the most important acts in improving the quality of science education. This is a significant and very readable book for all student and practising secondary school science teachers, for science advisers and school mentors.