First published in 1995.This teaching book is packed with practical ideas and advice for the beginning science teacher. It is based on three simple principles regarding teaching methods: a principle of variety; a principle of careful and appropriate choice; and a principle of skilful and carefully prepared implementation. Through a wide range of examples, the authors discuss in richly illustrated detail what these principles involve in practice. All the examples are real ones taken from recent classroom experience, made more vivid by a large collection of photographs documenting the steps and phases involved in each kind of approach.