OpenEd has a large number of lesson plans and resources connected to Common Core Standards, and lets you create a virtual classroom — for free — and make student assignments.

I found their process of adding questions and an assessment to the assignments a bit confusing (you can see their video below), but it may just be because I tried it out late at night when my brain wasn’t on full cylinders.

I’m adding this post to The Best Sites That Students Can Use Independently And Let Teachers Check On Progress.