Pass Your GCSE Maths. This CD-Rom revision aid, which has been developed by a team of teachers and comes with a "pass, or your money back" promise, focuses on different attainment levels. It gives interactive examples and past exam questions. For PC Windows computers. From software stores or through MathSoft, Knightway House, Park Street, Bagshot, Surrey GU19 5AQ. Tel: 01276 452299.