Re: Teaching kids the native language..
My daughters understand urdu very well and the older one did OK speaking it when her dadi lived with us. Now she seems to be getting out of practice. However, recently since she started going for Qur'an classes, her intermingling with other desi kids has turned her interest towards Urdu again as many little girls her age speak excellent Urdu. So now she responds back to us in Urdu. We do have to work harder at it though.