http://www.freerice.com/subjects.php?t=461367491887

Free Rice.com, the popular purveyors of the word definition test that donates 20 grains of rice to starving nations for every answer you get right (paid for by ads on the site) has now added multiple subjects. My favorite is World Geography, because I've always sucked at geography and this is going to help me learn while donating a bit of food in the process. And making me feel like mostly an idiot.

For all you homeschoolers out there with kids old enough to do this, it looks like it might be a good idea. I've only been working for about 10 minutes and I've already learned a lot, and between today and the last time I was on sponsors have donated about a pound of rice. It's not time cost effective (i.e., time wise it would make more sense to work a job for an hour and donate the money) but hey, it's something. :)