Feature: 1. 1. Mathematics teaching aids: Suitable for children aged 3-7 to carry out mathematics enlightenment, understand the numbers from 1-100, and the corresponding rules of number operations. Observe the law of adjacent numbers. 2. 2. How to play: Absence of complements, recognition of odd and even numbers, number calculations, size comparison, gobang, number decomposition, graphic symmetry games, supplementary graphics, which help to deepen memory, exercise hand-eye coordination, and mental ability. 3. 3. Book holder design: Foldable hundreds of boards, exquisite cartoon book holder design, convenient storage, not easy to lose, small size, convenient to carry, magnetic design, can stand up to hundreds of boards. 4. 4. A great gift for learning tools: The perfect gift for kids, boys and girls. It is also an ideal gift choice for birthdays, Christmas, New Years, holidays, etc., parent-child interaction, enhance parent-child relationship. 5. 5. Applicable places: Suitable for family living room or bedroom, creating a learning environment, training children's hand-eye coordination ability, suitable for kindergartens, early education centers, nurseries, parent-child gardens and other early education and parent-child institutions. Specification: Size: 18*22*1.5cmWeight: 0.28kgMaterial: paper, basswood plywood Package List: 1 set of hundreds of boards Note: Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.