As one of the core areas of the curriculum, science provides particular challenges, especially to teachers working at the top to the primary age range. These authors, both experienced primary teachers themselves, ask what teachers really need to know - both about their subject and about their children - in order to teach science effectively. This text gives practical guidance on curriculum planning, on balancing enquiry approaches to learning with more formal telling, and on the difficult area of collecting and interpreting evidence of children's progress for assessment.