Andrew Jennings (pictured) is the author of the bestselling series Vocabulary Ninja, Comprehension Ninja, Arithmetic Ninja, Maths Like a Ninja and Times Tables Ninja. Andrew is an experienced teacher and school leader and his innovative ninja-themed resources are used in thousands of classrooms in the UK and abroad. Follow Andrew on @VocabularyNinja
Sarah Farrell is an experienced Year 5 and 6 teacher and maths lead at her current school. Follow Sarah on Twitter @SarahFarrellKS2 and visit her website:
mrsfclassroom.wordpress.com
Author's Website: http://www.vocabularyninja.co.uk
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