This book was published 2001 by Pearson Education Limited .

Andy Bailey is a head teacher and co-author ofScientists at Work in the Read Awhile series. Brian Speed was formally Chief Examiner for GCSE maths for AQA(NEAB) and has worked for QCA on KS3 testing; Keith Gordon is Chief Examiner for GCSE mathematics for AQA(A); Kevin Evans is an examiner for GCSE mathematics for AQA(A). All authors are currently teaching mathematics.