There are many specialist terms and concepts used in mathematics along with specific procedures and equations that you need to know and be able to use. Gem Mathematics Basic Facts explains the concepts and provides the equations in clear, explanatory and well-illustrated examples from 'abscissa' to 'whole number'. It is designed for use at GCSE or Standard Grade within the UK (and for other courses appropriate to 16 year olds in Australia and elsewhere). The book is ideal both as a companion to course work and for quick reference while doing revision. For this edition the text has been updated and redesigned using full colour.