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、 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、 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、 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、 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.