Lots of stuff is out there to help teach geography, government and history through the US Census. A quick list:

Official 2010 Census site

2010 Census in Schools
Kits, lessons, maps from the US Census Bureau

Educational Resources at the Census Bureau
General links to a variety of educational materials from the Census Bureau

2010 Participation Rates
Why is Iowa so participatory?

Census at a Glance
Timeline from Wall Street Journal

Making Sense of the Census: Ideas For Classes Across the Curriculum
Great list of stuff from the New York Times Learning Network

2010 Census History Challenge
Fun mini-game from the Scholastic people

Fast Draw: US Census
Quick video overview of census history

Portraits of America
Nice collection of video clips by US citizens explaining how the Census helps them

2010 Census: Turning a pile of paper into the USA’s digital portrait
Video from USA Today explaining Census process

2010 Census United States
A great collection of teaching resources from Scholastic including Spanish goodies

A Look at the Population Density of the United States
HS lesson from National Geographic

Teaching With Documents: Little House in the Census – Almanzo and Laura Ingalls Wilder
Interesting secondary lesson from the National Archives

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