What is the content of "official document mathematics"? Who can tell me?
I don't need to be able to write. Official mathematics textbook: 5A, 4A, 3A, 2A, A, B, C, D, E, F, G, H, I, J, K, L*** has 16 grade. My girl is studying in the Children's Palace, and she starts to learn in one month 100.