I found this site that donates 20 grains of rice for each word you get correct to the UN World Food Program. They give you a word and 4 possible 1 word meanings, all you do is choose the correct meaning. An example...Parched means....1)jolly 2)dry 3)remorseful 4)minusclue. You simply pick the correct answer. Says that sponsers pay for the rice you donate when you answer correctly. Found this to be a neat site, you get to test your smarts and help someone at the same time! The link will probably take you to the level I was at. To start at the beginning just click on change level.

FreeRice.com