Westley Fryer always shares great resources on Twitter and Google+.  I wanted to share his Mapping Media to the Common Core page on his website.  The page below gives educators a great list of tools that students can use within the classroom.  Most of the tools are free but if something does cost money, Westly has the price listed too.  I encourage you to check out these resources and integrate some of these tools into your next lesson/unit.  Just click on the image below.