All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad  is His slave and Messenger.
  is His slave and Messenger.
There is no doubt that raising children according to the teachings of Islam is an obligation upon their parents and they will be held accountable for that in front of Allaah. There are some guidelines that one should take into consideration in raising and educating one’s children:
 as well as of the companions of the Prophet
  as well as of the companions of the Prophet  and pious people through stories and draw their attention to the wonderful Creation of Allaah.
  and pious people through stories and draw their attention to the wonderful Creation of Allaah.As regards the weak background of your wife, it is not a barrier if she uses the advanced means of technology to raise and educate the children such as Islamic websites and cassettes on education.
However, we inform you that you have to allocate some time for your children to teach them and to raise them according to the Sharee'ah even if this is at the expense of some material loss since you may regain your material loss but the children cannot regain what they missed.
Allaah Knows best.