This best-selling dictionary which contains over 650 up-to-date words and concepts. Each entry is in alphabetical order and along with a clear and straightforward definition, has a fun and informative colour illustration or diagram to help explain the meaning. Cross references link to other useful words in this dictionary so it is easy to build up maths vocabulary quickly. The colourful, modern design and simple layout make it easy to find the word you need, and fully understand it. This is an essential and invaluable tool that demystifies maths and explains terminology and concepts in an accessible way for primary children.