1.我认为帮助失学儿童是很有爱心的.
I think it (is) caring/affectionate to help children (who are) unable to go to school.
或：I think it (is) caring/affectionate to help dropouts.
2.我想资助没有钱上学的孩子.
I want to finance those kids/children (who are) unable to go to school because of lack of money.
I'd like to finance those kids/children (who are) unable to go to school because of lack of money.
3.我打算把每月的零花钱和用过的书都用来资助失学儿童.
I'm going to finance those dropout kids/children with my monthly pocket money and used books.
注：（ ）表示可以省略；/表示可以任意选用前后其一.