Think of this as an educational Pinterest. You can create a "learning board" where you collect almost ANYTHING from the web you'd like on a topic. People can browse through your boards (or you on theirs) and see embedded video, google docs, forms, other boards. Combines with LOTS of services, Edmodo, Quizlet, Prezi. You can like, comment, share, and track your progress.
TED is chock full of amazing content from the world of thinking, making, creating, innovating, etc.
Most folks know about it by now, so why include it? TED-Ed for one, but for two, it is transformative for enabling customized delivery of the content with piles of UDL features. It's just awesome.
Excellent mechanics, grammar, usage, spelling (MUGS) site that allows you to work at your own pace and customize some of the content of the examples with sports, celebrities, music, etc.
Great place to work at your own PACE!
Use this free, simple online tool to list your to do list but allows a simple method for prioritizing that list. Great for students with trouble organizing or with learning disabiliities like ADD