Federal Digital Literacy Portal offers content form a variety of sources, enables discussion and collaboration among users and elevates best practices to improve the quality of digital literacy offerings.
Cells Alive!, Offers fun, easy-to-understand information and animations on cell biology, microbiology, immunology, and microscopy.
Library of Congress offers free e-book series for iPads The Library of Congress has released a set of free e-books for iPad users. The Student Discovery Series covers the U.S. Constitution, the Dust Bowl, the Harlem Renaissance, immigration, symbols of the United States and the cosmos. Teaching resources come with the sets. The books are available for download from iBooks.
ProCon.org: Promoting critical thinking, education, and informed citizenship by presenting controversial issues in a straightforward, nonpartisan, primarily pro-con format.