It is estimated that 8 out of every 10 deaths caused by AIDS occurs in sub-Saharan Africa. If 2 million people die from AIDS this year, how many are from sub-Saharan Africa?
Showing this cartograph from Worldmapper was the highlight of my day. I didn't emphasize the connection between the numbers from the problem and the map as much as I could have--we worked the problem above and then I put this on the board with a "What do you notice?" Even without spinning a whole lesson out of it, we had a decent discussion. While it's not something that shows as learning on standardized tests, it felt like this was the lesson that might stick with a few students.