Over 500 free, teacher-developed Common Core-aligned ELA lessons for grades 3-11 Posted by Mel Riddile on November 1, 2014 Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Google+ (Opens in new window)Click to email this to a friend (Opens in new window) A library of over 500 free, teacher-developed Common Core-aligned lessons for grades 3-11 Source: achievethecore.org