Build your confidence in the primary classroom Deepen your own mathematical subject knowledge Discover why generations of primary teachers have relied on Derek Haylock s explanations of key mathematical concepts to support their understanding and strengthen their teachingThis seventh edition has been fully updated to offer a broader exploration of mastery teaching, deeper connections to contemporary research and new coverage of how children learn to count.It is supported by a fantastic range of online resources including lesson plans, videos and test questions to extend your own learning.