Our friends at the Bill of Rights Institute have introduced a new documentary resource written by teachers for use in K-12 classrooms. Documents of Freedom: History, Government, & Economics through Primary Sources is designed to be used as a supplement (or even as a substitute) for traditional government, civics, and economics textbooks. Each lesson unit highlights key primary sources and is indexed to the standards of many states, the Common Core, and the College Board. Best of all, it works equally well across all platforms: Windows, Mac, tablets, smartphones, and other devices.
Access to Documents of Freedom is free (registration is required).