High quality materials: it is made of wood, with a smooth, non -toxic and harmless surface, and can be used for a long time to meet the needs of most people. Simple operation: you can calculate four arithmetic additions (+), subtraction (-), multiplication (x) and division () by slightly turning the toy. And it's easy to transport. Cultivate your capacities for reflection: mathematical toys and recognition of numbers, pedagogical aid cubes cylindrical arithmetic. The size is fair, adapted to children to grasp, to turn freely, to use in a flexible way, to exercise the flexibility of the fingers and to develop brain intelligence. Improve your skills in arithmetic. The perfect gift: for teachers of nursery and elementary schools, the children of the class offer good awards, baby birthdays, reward gifts for children from parents, gifts for children's day. Learning toys: Children's parents' families participate in the construction of games together to enjoy good family times and precious memories.