Ladybug Counting Stones are a engaging way to explore counting to 20, subitizing, odd and even numbers, and addition and subtraction. Each set of spotty ladybugs includes two each of 0-10 (22 Ladybugs) and an activity leaflet of related ideas and games. Durable and weatherproof the bugs are perfect to be used in their natural outdoor environment — perfect to be housed in a tray of leaves and twigs! Each Ladybug measures 2".