How does charity help the deprived and underprivileged children?

Charity meansgiving something to the needy with the knowledge that whatever given is not going to come back. There are many good hearted people forming organizations to help the poor which is good for the society as a whole. There are so many underprivileged children in our society and these organizations make a difference to their life by giving them food, education and a roof over their head to live. So charity should be encouraged and supported as even a small contribution will make a big difference on a national level.