At www.freerice.com you can select a subject (i like math) and answer random questions. For each question you answer correctly, they will donate 10 grains of rice.
Here is some info on it:
According to the United Nations, a child dies every 6 seconds from hunger related causes.
Though 10 grains of rice may seem like a small amount, it is important to remember that while you are playing, so are thousands of other people at the same time. It is everyone together that makes the difference. Thanks to you, FreeRice has generated enough rice to feed millions of people since it started in October 2007.
At www.freerice.com you can select a subject (i like math) and answer random questions. For each question you answer correctly, they will donate 10 grains of rice.