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DESIGN and TECHNOLOGY -
publisher : Collins Educational 
ISBN 0-1744-8162-4
Colin Caborne, Ian Mould, Prof. John Cave

A general book useful for all stages from KS3 to KS4 - with many basic concepts covered. Sections on Mechanisms, Electronics, Energy and Structures with more detailed coverage of working with materials and cutting actions of tools.  Useful charts of material properties  and a sectionexam questions that would be useful for revision. First published 1989 but reprinted and updated.

MECHANISMS - GCSE Technology
publisher : Stanley Thornes
ISBN 0-7487-0150-8
Steve Rich and Anthony Edwards

An easy to read book with simple diagrams and straightforward text explanations of Lifting systems, Gearings, Threads, Linkages and Environmental issues.  A useful introduction to the principles that will be developed later in the GCSE course.  Easy to understand and follow.

PNEUMATICS - GCSE Technology
publisher : Stanley Thornes
ISBN 0-85950-933-8
Steve Rich and Anthony Edwards

Another easy to read book with simple diagrams and straightforward text explanations of particular aspects of pneumatics.  The theory is supported with activities to develop a understanding.  Diagrams and B & W photographs illustrate all points.

MATERIALS, PRINCIPLES AND PRACTICE
publisher : Butterworth Heinemann ( The Open University )
ISBN 0-7506-0390-9
Edited by : Charles Newey and Graham Weaver

An Advanced Level book that contains a wealth of information that is detailed and accessible.  Advanced coverage of topics such as the reason for fractures developing in the way they do is presented in a straightforward and well illustrated manner.   At A-Level and above this book gives an insight into topics required and greatly aids their understanding despite the level of technology covered.