Build early numeracy skills through tactile, hands-on play with this set of chunky number stamping stones. Each stone has an engraved and painted numeral or operation symbol on the top and a recessed design underneath for stamping. The set includes numeral stampers 0 through 10 plus +, -, and = operation symbols, giving children a playful way to explore counting, number order, and simple math statements. Position dots help children orient each numeral correctly, while the washable stone mix construction supports indoor and outdoor number play. Safe for ages 2 years and up.