
Professor Ruth Merttens, from the University College of St Mark and St John in Plymouth, spends most of her time developing resources for primary and secondary school teachers in U.K.. She also travels the country giving practical, hands-on in-service training on creative teaching, the teaching of mathematics and English and development in the Early Years. She contributes regularly to professional journals, educational magazines and newspapers. Source: http://www.pearsonschoolsandfecolleges.co.uk/Primary/Mathematics/CompleteSchemes/Abacus/Philosophy/meet-the-abacus-authors.aspx

Abacus
2001
ISBN 9780602291136
Number
2003
ISBN 9781844212736Clarkson Collection
2008
ISBN 9780140901191
Beginning to count 2
1988
ISBN 9781852700645
Sharing maths cultures
1990
ISBN 9781850008767
The National Curriculum
1990
ISBN 9781852702786
Partnership in Maths : Parents and Schools
1993
ISBN 9781282373471
Abacus 4
1997
ISBN 9780602269036
Abacus 5
1997
ISBN 9780602268947
Abacus F2
2001
ISBN 9780602306298
Abacus Evolve Foundation
2008
ISBN 9780602574123
Abacus Year 1 Workbook 1
2013
ISBN 9781408278239
Abacus Year 3 Textbook 1
2013
ISBN 9781408278475
Abacus Year 3 Textbook 3
2014
ISBN 9781408278499
Parents' guide to your child's maths
1988
ISBN 9781852700591
Counting
1988
ISBN 9781852700652
Measuring
1994
ISBN 9780590531566
Abacus infant simmering activities
1996
ISBN 9780602269340
1999 Abacus Year 1 / P2
2000
ISBN 9780602305413
Abacus F1
2001
ISBN 9780602306267
Sharing Maths Cultures : IMPACT
2002
ISBN 9781135427726
Abacus Year 4 Textbook 2
2013
ISBN 9781408278512
Pearson Primary Progress and Assess Teacher's Guide
2015
ISBN 9780435172947