Build a fascination for numbers with our best-selling Number Pebbles. These tactile pebbles are guaranteed to appeal to children’s natural instincts to sort and collect. Cast from unique mix, they are durable for use in sand, water and outdoors, offering young learners the opportunity to explore numbers across many areas of a setting. The set includes two each of numbers 0-10 (22 pebbles). Each pebble is engraved with a number and measures approximately 1 1/2".