My third-generation immigrants are smart kids: they don't open their algebra during my class any more. They know that I'll ask them what is the Ukrainian for the things they study now. However they were interested to talk about their hobbies and learn the specific vocabulary in Ukrainian.
Ni xiaojie has quit me, now she goes only to the Chinese school that don't make sure that the parents know about their children's home work. In her case, the vocabulary on balley and her hobbies just scared her. Though she has nothing against me personally, on the last lesson we talked friendly.