This book is part of a book series called Elves Of Owls Head Mountain .

This book was published 2012 by First Edition Design eBook Publishing .

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.