That's Mathematics is a maths book like no other. It's a vibrant, colourful book for young children showing them that maths is useful, interesting, fun and EVERYWHERE! They use it every day when they count, share, play, do sport, make cakes or move to music. Aimed at children from 5 to 8 years, the youngest can enjoy it as a picture book, reading Lehrer's rhyming song lyrics and looking at Elina Braslina's joyful illustrations. They will pick up a basic understanding of real-world maths and learn some core maths language along the way. Older children are challenged to 'Try This' and 'Explore This' by author Chris Smith, who is a maths teacher, musician and all-round maths enthusiast. The activities are designed to deepen their curiosity and knowledge. There are supporting online activities to continue the fun, plus notes for parents to encourage you to get involved and help you discuss topics covered and keep the learning going after the book is closed.