TEDEd

TED – Enjoy short, entertaining, educational videos on topics ranging from quantum physics to gaming theory to music videos. For a more engaged learning experience, try TEDEd, which features short lessons from educators brought to life by animators. In addition to the video lessons, TEDEd allows you to take short quizzes on the subject, find resources for further study, and join guided discussions. You can track your progress and “flip” lessons to customize them.

Open Yale Courses

Open Yale Courses provides free access to a selection of introductory courses taught by distinguished teachers and scholars at Yale University. All lectures were recorded in the Yale College classroom and are available in video, audio, and text transcript formats.

edX

edX offers over 650 courses in computer science, the humanities, and math, with over 1,700 faculty and staff from the likes of Harvard, MIT, Berkley, Caltech, and the Sorbonne teaching and discussing topics online. Began as collaboration between Harvard and MIT to bring some of their signature courses to anyone with a computer.