Judith McCulloch & Sylvia Turner 
Making Connections in Primary Mathematics [PDF ebook] 

First published in 2004. The main aim of this book is to identify the connecting ideas in primary mathematics in order to help teachers develop children’s understanding of maths. The text emphasises the relationship between language, notation and representation; identifies misconception that can develop from false connections and provides activities to clarify understanding. Written for students training to be teachers and for teachers reconsidering their approach to maths as part of professional development.