Collins Primary Dictionaries For children aged 6 and over, this best-selling illustrated dictionary contains full sentence definitions and child-friendly example sentences as well as colourful illustrations and photographs, colour headwords and an A-Z on every page. Colour headwords and the alphabet on every page help you find the right word. See words clearly defined and used in a full sentence. Understand how to choose the right word and use it correctly. Collins Word Wizard includes antonyms, themed pages, games and help with spelling, grammar and writing to improve language skills. For ages 6+.