High-quality materials: It is made of wood, with a smooth surface, non-toxic and harmless, and can be used for a long time to meet the needs of most people. Easy to use: you can calculate four arithmetic additions (+), subtractions (-), multiplications (x), and divisions () by lightly rotating the toy. And it is easy to carry. Cultivate Thinking Ability: Mathematical toys and number recognition, teaching aids arithmetic cylindrical cubes. The size is just right, suitable for children to grasp, rotate freely, use flexibly, exercise finger dexterity, and develop brain intelligence. Improve your arithmetic skills. The Perfect Gift: For preschool and elementary school teachers, children in class give good rewards, babies' birthdays, reward gifts for children from parents, Children's Day gifts. Learning Toys: Families with parents and children participate in building games together to enjoy good family time and valuable memories.