* This set of magnetic number wheels is specially designed for kindergarten and primary school children to cultivate their primary school arithmetic and spatial thinking. It promotes children's thinking and mathematical skills. * The magnetic number wheels are easy to use and increase children's interest in learning. Children can use them to perform various additions, subtractions, multiplications, divisions and integrations. * The number wheels are made of environmentally friendly materials that are safe for children. The simple design, smooth surface and excellent hand feel ensure a pleasant playing experience. * The number wheels are perfect for use in kindergartens and elementary school. Children can use them in games or tasks to improve their math skills. Each disk is magnetic and can also be used as a daily magnet. * The magnetic number wheels are small and fine and easy to assemble and disassemble. They are perfect as a gift for children, students, boys and girls.  * Size: 6х3х5 см