"Understanding Mathematics for Young Children: A Guide for Teachers of Children 3-7" by Derek Haylock and Anne Cockburn is a comprehensive textbook published by SAGE Publications LTD in 2017. The book, written in English, provides insights and guidance on teaching mathematics to young children aged 3-7. With 336 pages and a paperback format, this textbook covers various mathematical concepts in a clear and accessible manner, making it an essential resource for educators looking to support early mathematical learning in young children.