PBS Learning Media just released a portal for students that includes: ideas and resources for project based and self paced learning. Also, there are number of free tools for educators such as quiz and lesson generators, a storyboard tool, and more. Finally, there are a number of links and videos for a wide range of subjects such as: digital art, Social Studies, Science, etc.
I highly recommend checking out PBS LearningMedia for students by clicking here!!!
Thanks to Technology & Learning for the tip!!!