Book excerpt: The Effective Teaching of Biology aims to identify the special dimensions of the subject, how it contributes to the curriculum as a whole and why the teaching of biology differs from the teaching of other subjects. Current legal and safety requirements are provided together with practical teaching ideas and sources of information. The book also covers contemporary issues which are the subject of extensive debate, such as the changing patterns of assessment of pupils, the use of living organisms in school and the nature of learning difficulties which pupils experience.