We speak mainly English at home even with their granparents. So much so that my kids keep insisting that they are English and not Chinese. dear husband & I had an understanding previously. I will coach my kids English and he Chinese. My Chinese really half baked. I can speak but reading and writing a bit poor.
Recently, dear daughter asked dear husband 左 is left or right cos her teacher asked her to trace her左手. dear husband wrote the characters 左右 out but proceeded to teach her the opposite!!! We ended up arguing cos he said he is very sure that he is right. In the end I told him to go check on the web. He came out and quietly say yah you r right. But I was taught the other way mah. Then he went to tell dear daughter and dear daughter told him nevermind oredi daddy, I trace both hands. Tmrw I give laoshi both then she can pick the correct one herself.
There were a few more such incidents. He tried using mainly mandarin with dear daughter but when he went like "me(4)" instead of "(1)" when he wanted dear daughter to wipe the table and "xue(2)" instead of "xie(2)" when referring to shoes, I decided to put a stop to him speaking mandarin to my kids.
Now I enrol them in Tien Hsia to expose them to more Chinese since our home environment is limited where Chinese is concerned.