Develop early mathematical skills with these attractive Ladybug stones. Durable and weatherproof they can be used to explore counting to 20, odd and even numbers, and addition and subtraction. Allow the children to discover the ladybugs in their natural environment! Bury them in a tray filled with leaves and twigs or scatter them around the edge of an outdoor nature area. Each set includes two each of 0-10 and an activity leaflet full of related ideas and games.