This robust set of counting stones displays number arrays from 1 to 10, using a pattern of indented circles to represent the relevant number. The stones will help children with counting, number recognition, subitizing, number bonds and other early math concepts. Made from a unique stone and resin mix, these stones can be used in a variety of environments, including in water and sand. Their tactile nature means they are perfect for sensory math investigations. Includes 20 stones (2 sets of 1–10 stones) measuring between 80–85mm in length. Age 3+.