Fantastic digital media resource!
Since my school district doesn't subscribe to Discovery Education anymore, I have used PBS Learning Media SO much! You can search by CCSS objectives and it serves up all sorts of totally usable material, that even our district doesn't block!
How I Use It
My favorite way to use this website is as a whole class introduction to a new learning objective. In this way it serves as a great anticipatory set. I have also made a class page of favorites and have included a link on our grade level website, which is perfect for my students who need extension activities.