SOPHIA creates a vibrant learning community that empowers students to learn in their own way, helps teachers to innovate, and provides an opportunity to achieve an affordable college degree. We are surrounding the traditional classroom with a worldwide classroom that connects people who want to learn with people willing to teach. SOPHIA is a first-of-its-kind social education platform created to reach 21st century students: digital natives who grew up with Facebook, Wikipedia and YouTube in a highly interactive and personalized digital world. We believe that a social learning experience, one that encourages exploratory and cooperative learning, is an opportunity to make higher education more affordable. At SOPHIA, we are putting students on a path to a lower cost college degree. Thanks to WYATT from Tuesday's ED554

The CAST Universal Design for Learning (UDL) Lesson Builder provides educators with models and tools to create and adapt lessons that increase access and participation in the general education curriculum for all students.

Although it hasn't been updated since December, this blog has some valuable information of making better presentations.

Three primary principles guide UDL-and provide structure for the Guidelines:

Thanks to @H2JillO for sharing this site

Great list of copyright free sites