Revision Guides GCSE Mathematics: Foundation Tier, Intermediate Tier and Higher Tier. By Stafford Burndred.

This revision guide offers short tests to help students check what they do and do not know - with explanations, worked examples, sample questions and answers. Includes hints on revision and exam techniques. Single guides cost Pounds 3.95 each; discounts for quantity orders. Pearson Publishing, Chesterton Mill, French’s Road, Cambridge CB4 3NP. Tel: 01223 350555.

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The Chambers Dictionary on CD-Rom; Chambers Encyclopedia on CD-Rom; Chambers Biographies on CD-Rom

Of these classic dictionaries now on CD-Rom, the Chambers Dictionary is a new edition and lists 500,000 phrases and definitions. The Chambers Encyclopedic Dictionary has more than 60,000 searchable words, names, people and places. Details of more than 24,000 famous (and infamous) lives are offered by Chambers Biographies. Pounds 29.99; Pounds 39.99 and Pounds 49.99 respect-ively. Liris Interactive, 5th Floor, Elsley House, 24-30 Great Titchfield Street, London W1P 7AD Tel: 0171 631 0878.

THE WEB NAVIGATOR. By Paul Gilster

A guide into and around the Internet, this book aims to help you use the leading Web browsers, create personal Web pages, find and receive the information you want and help you find audio and video plus-ins, add-ons and helper programmes. Pounds 16.99. John Wiley and Sons, Baffins Lane, Chichester, West Sussex PO19 1UD. Tel: 01243 779777.