A lesson plan on the three branches of government, designed for grades 5-8, but with material adaptable for lower grades, is available on the EDSITEment-reviewed website The Truman Library. Particularly pertinent is a summary of the checks and balances in the system.
Well, thanks to a Nielsen report, we now know the answer. And it's 42. No, just kidding. According to Nielsen's survey, based on over 65,000 users, the average U.S. subscriber is using about 450 MB of data per month, with this number representing data usage for the first quarter of this year. It's not a small number, but not that high either.
Consumers with iPhones and Android smartphones consume the most data: 582 MBs per month for the average Android owner and 492 MBs for the average iPhone user. Also of note, Windows Phone 7 users doubled their usage over the past two quarters, perhaps due to growth in the number of applications available.