http://www.freerice.com/
For every vocabulary word you get right, they'll donate 20 grains of rice to starving people. 20 grains may not sound like much, but it adds up, so go learn some new words and help end world hunger!
For every vocabulary word you get right, they'll donate 20 grains of rice to starving people. 20 grains may not sound like much, but it adds up, so go learn some new words and help end world hunger!