This is Book 4 in the CA3 Datblygu Rhifedd Series. See all CA3 Datblygu Rhifedd books here.
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Hilary Koll (Author)
Hilary Koll is a part-time Mathematics Co-ordinator and teacher of children in Berkshire Primary school. She works as a Lecturer in Mathematics Education at the University of Reading on undergraduate, post-graduate and in-service training courses.
Steve Mills (Author)
Steve Mills beg
HILARY KOLL was a Mathematics Co-ordinator and Maths Teacher in Bracknell primary school and has also worked as a part-time lecturer in Mathematics at the University of Reading. Hilary has more recently turned her attention towards publishing and is now a full-time writer and consultant in mathematics education. She has written over 150 titles for a variety
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