[Commodity specification]: about 7.5 5.5cm The packaging pattern will be changed from time to time. In addition, there will be color difference when taking pictures. Please forgive me. [Commodity packaging]: Plastic packaging Children are good helpers in learning mathematics. They can add, subtract, multiply, divide and spell the answers! You can add, subtract, multiply, divide, compare sizes and other operations. You can not only let children practice by themselves, but also let parents set questions to test. You can learn in entertainment and get half the result with twice the effort! It's a pleasure to be constantly changing. While children develop their intelligence, adults cannot escape the temptation. An intellectual toy that has fascinated hundreds of millions of people all over the world. Rubik's cube not only develops people's logical thinking ability, but also strengthens their practical ability, and exercises the coordination between the brain and hands. Toy description: Children are good helpers in learning mathematics. They can add, subtract, multiply, divide and spell the answers! For children's intellectual development - --- cultivate the coordination of hands (flexible muscles), eyes (six aspects), and brain (spatial thinking), and the ability to use clues to solve problems.