Develop early mathematical skills with these attractive ladybug stones. Durable and weatherproof they can be used to Explore counting, subitizing, odd and even numbers, and addition and subtraction. Each set includes two each of 0-10 (22 ladybugs) and an activity leaflet. Size 2"., Learn key math concepts through play, Durable and weatherproof for use indoors and outside, Use for counting, subitizing and exploring number bonds.