With the 2010 census looming, there has been talk in political circles about the possibility of Missouri losing a congressional seat. Some people (mostly political nerds) have wondered how Missouri would break down into eight congressional districts. In reality, state legislators will make mapping decisions based on the geo-political makeup of the state. Lucky for us, a smart guy named Dave has developed a neat piece of software for anyone to try their hand at drawing a congressional map.
Dave's Redistricting Map
He also has a blog that talks about applications for the software and some technical stuff that goes over my head.
Here's Missouri's current Congressional Map:

This seems like a unique, interactive way to teach students about redistricting, gerrymandering and population density variances across the state.
Just choose your state, how many congressional districts you want, and whether you want to use 2000 census population numbers or 2008 estimates. Each population block has a breakdown of the demographics of that group.There's also a running tally on the left side to let you know how many people are in each of your districts.
I recommend playing around with the maps and checking out all the data embedded in it. And who knows? Maybe the map you create will end up looking like the map our state officials draft next year.
I would also like to warn you that making these maps can become a bit addictive. It's easy to spend a couple of hours crafting the perfect map.
PS Saving your completed maps seems a little complicated, but the help section is informative.
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