The Numicon: 1-100cm Number Rod Track by Oxford University Press is a toy designed to help children learn and understand numbers. Made in the United Kingdom, this interactive tool features a series of number rods that can be assembled to create various number combinations. The compact size of 21.2cm in length, 16.1cm in width, and 1.1cm in height makes it easy to use and store. With the help of this toy, children can develop a strong foundation in number skills and have fun while learning.