Explicit differentiation with built-in flexibility for Single/Double Science and Science: Physics in the same book. Clearly written in an informative style with attractive, functional full-colour photographs and effective diagrams. Sub-divided into topics to suit any scheme of work with summaries, checkpoints and up-to-date examination questions at regular intervals. Scope and benefits of the textbook is expanded by an Extension File, designed for photocopying, which includes a Teacher's Guide, Activities, Assignments and a CD-ROM.